baber/WOPTO huggingface dataset:
Patent KR-840001437-B1 (KR)
Title: Cardboard - container for liquid
Inventor: MORAN JOHN P
IPC: B65D5/08
Filed: 1980-12-15
Granted: 1984-09-27
Abstract: In a bottom-closed structure for a liquid-carrying, thermoplastic-coated paperboard carton or container, the overlapped and sealed areas are formed to extend in an X-shaped configuration across the bottom. with minimal raw-edge exposure on the inside. The shapes of the four main bottom panels of the blank from which the carton is formed are such that they accommodate interdigital nesting or overlapping w.r.t. the bottom section of an adjacent blank prior to the cutting operation on a paperboard roll. This results in a narrower roll and, hence, substantial paperboard savings.
Patent KR-830002070-B1 (KR)
Inventor: ODA MASAO
IPC: B01J37/04
Filed: 1981-05-20
Granted: 1983-10-11
Abstract: 내용 없음.
Patent KR-880000708-B1 (KR)
Title: Electrolytic reduction cell
Inventor: HUNI JEAN-PAUL ROBERT
IPC: C25C3/08
Filed: 1982-06-24
Granted: 1988-04-25
Abstract: Electrolytic reduction cell for prodn. of molten metal by electrolysis of a molten electrolyte includes a linear baffle member extending transversely of the cell and extending upwardly from the cell floor to a posn. close to the level of molten metal in the cell.  The baffle is formed with energy-absorbing restricted flow channels.  Used e.g. in the prodn. of Al by electrolysis of alumina in a fused chloride electrolyte.  The baffle members exert a damping effect on the flowng molten metal and reduce the amplitude of its wave motion so that the modes can be maintained at a smaller spacing from the metal/electrolyte interface.
Patent KR-840001659-B1 (KR)
Title: Process for the preparation of substituted cyclo-proylmethoxy phenylurea
Inventor: FELIX RAYMOND A
IPC: C07C273/04
Filed: 1982-11-24
Granted: 1984-10-12
Abstract: Title compds. (I; R3, R4 = H, lower alkyl, lower alkoxy; X,Y = Cl, F,Br;Z = H2 Me, Me2; n=0-1), useful as herbicides, were prepd. by the reaction of VI and V obtained from IV and phosgen. IV was prepd. by the reaction of II with III. Thus, 25g 3-(2'-2'-dichloto-methylcyclopropylmethoxy)aniline was dissolved in C6H6 and satd. with HCL(g) and a 12.5% soln. of phosgen in C6H6 was added. The soln. was refluxed for 3 hr to give 3-(2',2'-dichloro-l'-methylcylopropylmethoxy)phenyl isocyanate, followed by treatment with dimethylamine(g) gave 22g I.
Patent KR-850001808-B1 (KR)
Title: Method for manufacturing dry powdered egg
Inventor: LEE YONG-SOB
IPC: A23L7/109
Filed: 1983-09-23
Granted: 1985-12-23
Abstract: Dried egg powder for noodle soup was prepd. Specified amounts of peeled egg and other raw materials ( green onions, salts, seasons, black pepper, etc.) were mixed and steam-boiled. After cooling, cutting, the eggs were frozen at below -14≰C for 12hr. and dried with 100≰C air for 30min. These dried eggs retain their original shape, color, and chewability during restoration.
Patent KR-880000798-B1 (KR)
Title: High-frequency heating device of microwave oven
Inventor: AOYAMA SHUKI
IPC: H05B6/80
Filed: 1983-10-18
Granted: 1988-05-09
Abstract: The oven has a rectangular outer housing and a similar inner housing enclosing the cooking space with the gab btween them divided by the heat protection plate from the rear wall of the outer housing into two separate chambers.  The first of these lying to the rear of the heat protection plate containing the HF oscillator and the second chamber lying to either side of the cooking space containing a conrol device.  The device contlors both the microwave oscillator and radiant heating elements projecting into the cooking space from the rear wall of the oven.
Patent KR-910010034-B1 (KR)
Inventor: BROWN DAVID L
IPC: F01D5/14
Filed: 1983-10-22
Granted: 1991-12-10
Abstract: 내용 없음.
Patent KR-880002158-B1 (KR)
Title: Boats with stabilizing flaps
Inventor: KAYE ALEX R
IPC: B63B7/02
Filed: 1984-02-01
Granted: 1988-10-17
Abstract: The boat has a pair of bottom panels provided with respective flaps to cause the stern of the boat to ride relatively high in the water when the boat is driven forward in the water by an outboard motor. Specifically, the flaps pivot downwardly and provide drag for the stern in response to forward movement of the boat.  The flaps provide planing surfaces near the stern.  The boat can be collapsible in which case the bottom panels mate with resilient side panels to form, when collapsed, a flat sandwich configuration which, by the use of improved straps, can be carried on the top of a vehicle or can be hand-carried.
Patent KR-910005917-B1 (KR)
Title: Improved positron emission tomography camera
Inventor: MULLANI NIZAR A
IPC: G01T1/29
Filed: 1984-08-31
Granted: 1991-08-08
Abstract: A positron emission tomography camera (10) has a plurality of detector rings (14) positioned side-by-side or offset by one-half of the detector cross section around a patient area (16) to detect radiation therefrom. Each ring contains a plurality of scintillation detectors (60,62,64) which are positioned around an inner circumference with a septum ring (30,32) extending inwardly from the inner circumference along each outer edge of each ring. An additional septum ring (36) is positioned in the middle of each ring of detectors (60,62, 64) and parallel to the other septa rings (30,32) whereby the inward extent of all the septa rings may be reduced by one-half and the nllmber of detectors required in each ring is reduced.
Patent KR-890004653-B1 (KR)
Title: Logic circuit
Inventor: DAHARA AKINORY
IPC: H03K19/013
Filed: 1984-12-24
Granted: 1989-11-21
Abstract: The output stage includes a Schottky diode connected between the connection of the output transistors and a further Schottky transistor, the emitter of which is connected to a selective transistor.  When at least one input is low, the selective transistor is off, making the Darlington pair on.  The further transistor is off since the base is at a low voltage than the emitter, when all inputs become high, the selective transistor becomes high, turning off the Darlington pair.  The further transistor becomes on, coupling the charge stored in the stray capacity around circuits.
Patent KR-860002146-B1 (KR)
Title: Crt terminal with two cpus
Inventor: KIM TAE-UK
IPC: G06F3/153
Filed: 1984-12-28
Granted: 1986-12-11
Abstract: A CRT terminal system uses two CPUs; one is for a system processor(1) and the other is for a video controller(2). This comprises a video ROM(3), a video display RAM(4), an address contention controller(5), a screen-line counter(6), a character generating ROM(7), a shift register(8), and a CRT displayer(9). The video ROM(3) comprises regions for stack, main program, dummy program segment, and scan-line counter reset. The refresh of a screen memory is automaitically performed while the videocontroller is operated with the data stored in the video ROM, because the corresponding address of the screen memory is matched with the address of the video ROM.
Patent KR-900009015-B1 (KR)
Inventor: HIRAI KOICHI
IPC: B01J23/72
Filed: 1985-01-26
Granted: 1990-12-17
Abstract: 내용 없음.
Patent KR-920002847-B1 (KR)
Inventor: RATTI RUIGI
IPC: A61K/
Filed: 1985-03-29
Granted: 1992-04-06
Abstract: 내용 없음.
Patent KR-890001121-B1 (KR)
Title: Method for producing glass preform for single mode optical
Inventor: TANAKA KOOTAROO
IPC: G02B6/00
Filed: 1985-04-19
Granted: 1989-04-24
Abstract: A method for producing a glass preform for a single mode optical fiber comprising a core and cladding comprises (a) depositing fine glass particles of a glass raw material on the periphery of a cylindrical seed having a smooth and clean outer surface to form a deposited soot by flame hydrolysis, (b) drawing the seed from the deposited soot, (c) inserting a core glass rod in a hollow portion of the glass soot to form a complex body, and (d) drying and sintering the complex body.
Patent KR-920004457-B1 (KR)
Inventor: MORA CAMILLO C
IPC: C07C69/86
Filed: 1985-06-25
Granted: 1992-06-05
Abstract: 내용 없음.
Patent KR-910000740-B1 (KR)
Inventor: PANETH ERIC
IPC: H04L27/22
Filed: 1985-11-04
Granted: 1991-02-06
Abstract: 내용 없음.
Patent KR-890000057-B1 (KR)
Title: A using exchanger for a operation amplifier
Inventor: LEE HYUN-WOO
IPC: H04M9/00
Filed: 1985-12-17
Granted: 1989-03-06
Abstract: The circuit uses operational amplifiers and gates to perform the same function as that of the conventional circuit employing transformer. It has a loop current and ringing supply circuit (20) including the attenuator circuit of an operational amplifier (U2), a hook-off detection circuit (21), a ring detection circuit (22) and a voice circuit (23), the circuit (23) including an inverse amplifier consisting of an operational amplifier (U3) and a muting circuit of transistor (Q2) and the detection circuit having 1st and 2nd comparators and a logic circuit of gates.
Patent KR-880002386-B1 (KR)
Title: Fader circuit for voice amplifier
Inventor: LEE SUK-WOO
IPC: H03G3/10
Filed: 1985-12-27
Granted: 1988-11-03
Abstract: This invention is a type of sound volume fader circuit amplifier which increases or decreases sound volume.  The output port of an initial reset circuit (I) is connected to the reset terminal of flip- flop through a diode (D1).  The fade-out switch (PS1) is connected to the set terminal of flip-flop through a resistor (R2).  The operation of an integrator (2) by an comparator (CP1) is interupted in order to maintain the fade-in-time constantly.  After the operation of fade- in, the fade-out switch is instantaneously connected.
Patent KR-920007095-B1 (KR)
Inventor: LUDWICK JOHN J
IPC: H04L5/04
Filed: 1984-10-24
Granted: 1992-08-24
Abstract: 내용 없음.
Patent KR-910007548-B1 (KR)
Title: Process for the hydrolysis of alkylene oxides using organometalates
Inventor: KEEN BRIAN T
IPC: B01J31/08
Filed: 1985-03-28
Granted: 1991-09-27
Abstract: In processes for the hydrolysis of alkylene oxide to form alkyene glycols in the presence of selectivity-enhancing organometalate wherein the organometalate is provided in a water-insoluble phase, a stabilizing material is used to enhance the stability of the organometalate. The stabilizing material is water-soluble and comprises a cation and a selectivity-enhancing metalate anion.
Patent KR-930009122-B1 (KR)
Inventor: OHO SHIGERU
IPC: H04Q9/00
Filed: 1986-02-21
Granted: 1993-09-23
Abstract: 내용 없음.
Patent KR-900000910-B1 (KR)
Title: Poly propylene-base resin composition
Inventor: KAWAI YOICHI
IPC: C08K3/00
Filed: 1986-04-09
Granted: 1990-02-19
Abstract: The polypropylene-base resin having a good impact strength, moldable flowability and coating property, is prepd. by heating at 170-280≰C the mixt. of (a) 65-95 wt.% crystalline ethylene propylene block copolymer with 7-30 wt.% ethylene and at least 65 wt.% insol. in boiling n-heptane; (b) 35-5 % ethylene propylene copolymer rubber with 10-34 % ethylene and Mooney viscosity M1+4 at 100≰C; (c) 2-25 % inorganic filler with particle size not above 6 m; and (d) 0.001-0.5 % organic peroxide.
Patent KR-940005174-B1 (KR)
Inventor: HAFERL PETER E
IPC: H04N9/29
Filed: 1986-10-11
Granted: 1994-06-11
Abstract: 내용 없음.
Patent KR-930003161-B1 (KR)
Title: Process for preparation of epoxy resin
Inventor: QUNICHI REIMOND
IPC: C08G59/14
Filed: 1987-02-14
Granted: 1993-04-23
Abstract: Epoxy resins containing both terminal hydroxyl groups and epoxy-derived groups are prepared by advancing a polyepoxide with a polyol and terminating the reaction at a point such that the epoxy resin reaction product contains both epoxy and terminal hydroxyl groups. The epoxy groups are then further reacted to form epoxy-derived groups and the rate of curing is further improved. The resulting epoxy resins exhibit lower melt and solution viscosities than those exhibited by conventional epoxy resins having the same epoxy equivalent weight, as well as curing quickly when used. The resins are usefully employed at high solids levels in can coating formulations and other epoxy formulations wherein the resin is applied from an organic liquid solution or aqueous dispersion.
Patent KR-900004662-B1 (KR)
Title: Alignment disk for magnetic disk driving apparatus and method and apparatus for verifying tracking error
Inventor: KANAI HIROSHI
IPC: G11B5/55
Filed: 1987-02-19
Granted: 1990-07-02
Abstract: A set of track diameter adjust signal pairs (10) are recorded symmetrically about the disk axis on tracks equal or larger in number to or than the number of phases of a stepping motor for driving the head carriage and corresponding to at least the excitation phases of the motor. This maintains data interchangeability of the magnetic disk drive apparatus. An index timing adjust signal (21) and azimuth adjust signals (30) are also included with a tracking and other errors of the disk drive apparatus verified.
Patent KR-900003422-B1 (KR)
Title: Rod-shaped dendrimers
Inventor: TOMALIA DONALD A
IPC: C08G75/20
Filed: 1987-02-26
Granted: 1990-05-18
Abstract: In a cylindrically-shaped dendrimer with at least 8 core branches emanating from a linear core, with each core branch extending through at least 2 generations and having at least 2 terminal gps., (1) the ratio of terminal gps. to the branches emanating from the core is more than 1, (2) the density of terminal gps. in the dendrimer is at least 1.5x that of an extended conventional star polmer having a similar linear core and monomeric units and a comparable mol. wt. and number of core branches in which each branch of the conventional star polymer bears only 1 terminal gp., (3) the mol. vol. of the dendrimer is no more than 80% of the mol. vol. of the extended conventional star polymer, and (4) the aspect ratio of the molecules of the dendrimer is at least 2:1.
Patent KR-900003588-B1 (KR)
Title: Supply discontinuance arrangements of ring-spinning machine's yarn serving opportunity
Inventor: LIM BYUNG-HWA
IPC: D01H13/16
Filed: 1987-06-09
Granted: 1990-05-26
Abstract: The raw yarn supply stopping device of ring spinning machine has yarn cutting detector to check the moment of yarn-cutting. The yarn cutting detecter detects mechanical or electrical signal at the moment of yarn-cutting, transmits it to the stopping device, stops the raw yarm supply into draft zone. The raw yarn stopping divice includes yarn cutting detector (A) between a front roller and a snail wire, signal transmitter (B) to deliver signal from detector (A), raw yarn supply controller (c) controlled by transmitter (B), and ring- shaped groove (D) on the circumference of a back top roller.
Patent KR-900003321-B1 (KR)
Title: Compounds having a cognition adjuvant acton agents containing them,and the use there of the treatment and prophylaxis of cognitives dysfunctions
Inventor: HOAK FRANCH
IPC: C07D233/02
Filed: 1987-07-01
Granted: 1990-05-14
Abstract: The compounds (I) having a cognition adjuvant action and agants containing them are prepared. In (I), n is 1 or 2; R is hydrogen, C1- C18 alkyl, CaH(2a-b+1) aliphatic acyclic radical, or CcH(2c-d-1) mono-, di-, tri-, and tetra-, etc.; R1 is hydrogen, C1-C18 alkyl, CaH(2a-b+1) acyclic aliphatic radical or CcH(2c-d-1) mono-, di-, t6ri- and tetraa-, etc.; R2 and R3 are equal, hydrogen, di(C1-C4)- alkylamino-(C1-C5)-aroyloxy-(C1-C8) alkyl or (C1-C6)- alkoxycarbonyloxy-(C1-C6)-alkyl etc.; R4 and R5  are cyclic ring systems having mono-, di- or tricyclic hetero cyclic ring.
Patent KR-900002867-B1 (KR)
Title: Porous solid tooth paste
Inventor: LEE BOM-JIN
IPC: A61K8/84
Filed: 1987-09-02
Granted: 1990-05-01
Abstract: A method for prepg. porous solid toothe past comprises (a) mixing common gel soln. tooth paste of 77-85%, PEG (polyethyleneglycole) base of 8-13% and water of 7-10% and (b) freeze-drying the mixt. for 3-4 hr at -5 - -10≰C.  The PEG of formula CH2(OH). [CH2-O-CH2 m.CH2OH (m= polymerizability) is a mixt. of macrogol 2000 (m= 40-50) and macrogol 4000 (m= 69-84) of wt. ratio of 25-40: 40-55.
Patent KR-910003377-B1 (KR)
Title: Sound frequency characteristic compensation system and method
Inventor: CHANG SUNG-CHUL
IPC: G11B5/035
Filed: 1987-10-26
Granted: 1991-05-28
Abstract: The system analyzes the characteristics of audio frequency of a listening room using the pink  noise  signal  to  calculate  the frequency compensation data and to  compensate  the  frequency  of each band. The circuit includes a microcomputer (1) for  analyzing the spectrum of the reflected pink noise signal  to  generate  the compensation data of each band, a memory (3) for transmitting  the programmed data and for storing the compensation data, a band-pass filters (6,7) for amplifying the output  signals  of  an  external signal receiver (4) and a pink noise generator (5) selectively and for filtering the signals of each band, electronic  volumns  (8,9) for adjusting the level of signals of each  band,  adders  (10,11) for adding and amplifying the signals of each band, and band  pass filters (12,13) for amplifying the right and  lift  stero  signals and for filtering the band signals.
Patent KR-910005386-B1 (KR)
Title: Method for measuring optical output of led printer head and its compensating device
Inventor: CHUNG SEUNG-SIK
IPC: G06K15/12
Filed: 1987-11-28
Granted: 1991-07-29
Abstract: LED intensity to each dot of  printer  head  is  measured  by sequentially sensing and tronsducing into digital signal data. And these digital data is statisticaly processed, compensated to  make contant LED intensity emitted and stored into  ROM,  which  solves mismatch problem between  each  panel  of  charge  coupled  device sensor and LED head  dot,  and  irregular  intensity.  The  system comprises CPU (10), LED  jprinter  heads  (20)  to  measure  light emitting, selecting  switch  (30),  selective  head  driver  (40), sensor (50), sensor driver (60), data compensating block  for  ROM (110) which is major scheme of this patent, and display panel  for system measurement head (120).  This  scheme  allows  to  regulate light-emitting time for consistent light output from LED array/
Patent KR-960005604-B1 (KR)
Inventor: CHIELI DAVIDE
IPC: G01R19/32
Filed: 1987-12-15
Granted: 1996-04-26
Abstract: 내용 없음.
Patent KR-910009792-B1 (KR)
Title: Picture signal control circuit
Inventor: LIM JAE-KOOK
IPC: H04N1/40
Filed: 1987-12-31
Granted: 1991-11-30
Abstract: A circuit is used for improving the coding effect of  CPU  by processing the black/white information of the binary image  signal by means of using the software. The  circuit  varies  the  reading time of the data stored in RAM according to the  quantity  of  the black/ white data in the image signal. The circuit includes  a  CCD sensor (A), a clock generator (B), the write/read counters  (C,D), a circuit (H) for deciding the reading period, a video  processing circuit (N).
Patent KR-920001121-B1 (KR)
Inventor: YOSHIDA EIJI
IPC: G02B6/38
Filed: 1986-12-19
Granted: 1992-02-01
Abstract: 내용 없음.
Patent KR-960006393-B1 (KR)
Inventor: TIBERIO BRUZZESE
IPC: C07D498/08
Filed: 1988-01-25
Granted: 1996-05-15
Abstract: 내용 없음.
Patent KR-960007583-B1 (KR)
Title: Digital circuit switching and packet-switching network and switching facility therefor
Inventor: DIETRICH BOETTLE
IPC: H04L12/54
Filed: 1988-01-28
Granted: 1996-06-05
Abstract: A digital switching network is disclosed in which paths can be preset from any inlet to any outlet either for circuit-switched connections or for packet-switched messages (packets), as required. At any point in time, the paths preset for the packet-switched messages form a network whose nodes lie in the switching facilities of the switching network. The switching facilities contain the functional units required to switch each data packet on the path preset for it. This makes it possible to dynamically divide a single switching network into a circuit-switching network and a packet-switching network as required.
Patent KR-910005204-B1 (KR)
Inventor: SAEKI JUNIZEI
IPC: H01L21/00
Filed: 1988-02-12
Granted: 1991-07-23
Abstract: 내용 없음.
Patent KR-940006097-B1 (KR)
Title: Paper size detecting and transmission time shorting method for fax
Inventor: SHIN JAE-SUNG
IPC: H04N1/38
Filed: 1988-02-15
Granted: 1994-07-06
Abstract: sensing a document size when a document size detecting sensor consisting of luminous elements and light receiving elements is turned on or off by a corresponding document size and storing the document size in a state storage; demodulating data of a recording document size of a receiving side; reducing data read through an image reader at the rate of the recording document size of the receiving side, modulating the data and transmitting the data through an interface; and turing off the luminous elements and the light receiving elements, thereby avoiding waste of power consumption.
Patent KR-960010791-B1 (KR)
Inventor: WADE JAMES JOSEPH
IPC: C07D487/04
Filed: 1988-03-02
Granted: 1996-08-08
Abstract: 내용 없음.
Patent KR-910002556-B1 (KR)
Inventor: MATORA ZUKASA
IPC: G06F9/38
Filed: 1988-03-28
Granted: 1991-04-24
Abstract: 내용 없음.
Patent KR-920001008-B1 (KR)
Inventor: UENO YUTAKA
IPC: H04N1/327
Filed: 1988-10-29
Granted: 1992-02-01
Abstract: 내용 없음.
Patent KR-920002714-B1 (KR)
Inventor: NAKANISHI WATALU
IPC: E21D9/00
Filed: 1988-11-18
Granted: 1992-03-31
Abstract: 내용 없음.
Patent KR-920000103-B1 (KR)
Title: Integrated circuit with stabilizing power supply
Inventor: LEE CHANG-HYON
IPC: H01L27/04
Filed: 1988-12-20
Granted: 1992-01-09
Abstract: The IC is for use in a circuit which supplies a stable  power to various power appliances, or generates  a high voltage for such power appliances. An output section includes a MOS transistor, and generates an output voltage of a certain level  by  adjusting  the input power. Two resistors generates bias voltages  in  accordance with the variations of the output voltage of the  output  section. Another MOS transistor turns on when the  output  voltage  of  the output section increase. A control section includes a zener  diode and reduces the output voltage if it increase, while  the  control section raises the output voltage if the output voltage lowers.
Patent KR-920001011-B1 (KR)
Inventor: SUGIYAMA KENJI
IPC: H04N9/78
Filed: 1988-12-29
Granted: 1992-02-01
Abstract: 내용 없음.
Patent KR-910006792-B1 (KR)
Title: Access memory expansion circuit of direcrt memory access controller
Inventor: TAE SUNG-SIK
IPC: G06F12/16
Filed: 1988-12-31
Granted: 1991-09-02
Abstract: The circuit extends the memory access region  of  the  direct memory access controller with a page register having a  number  of buffers storing the base address  of  each  channel  so  that  the various channels access  the  memory  independaltly.  The  circuit includes a  page  register  (30)  reading  the  base  address  of corresponding channel from the buffer and outputing  to  a  memory (70), a first controller (100) providing a  first  control  signal (C1) controlling the write state of the base address on  the  page register, and a second controller  (200)  providing  second-fourth signals (C2-4) controlling the read state of the base address  and designating the buffer to be read.
Patent KR-960002599-B1 (KR)
Inventor: SHIMIZU ISOO
IPC: B01J31/24
Filed: 1988-03-12
Granted: 1996-02-23
Abstract: 내용 없음.
Patent KR-970009151-B1 (KR)
Title: Ws-9326a, ws-9326b, and their derivatives
Inventor: KINO TOHRU
IPC: C12N1/20
Filed: 1989-02-01
Granted: 1997-06-07
Abstract: This application relates to new compounds called WS-9326A, WS-9326B, and their derivatives having valuable pharmaceutical properties and which are obtainable by culturing a WS-9326A and/or WS-9326B producing strain belonging to the genus Streptomyces in nutrient medium and recovering such compounds or salts thereof from the resultant cultured broth. The invention also relates to a process for the production of such compounds and to pharmaceutical compositions containing them or a pharmaceutically acceptable salt thereof as an active ingredient. The invention furthermore relates to a biologically pure culture of the microorgnism Streptomyces violaceoniger No. 9326 (FERM BP-1667).
Patent KR-920009332-B1 (KR)
Inventor: SHIMURA YUKIHIRO
IPC: H04W84/10
Filed: 1989-03-03
Granted: 1992-10-15
Abstract: 내용 없음.
Patent KR-940001579-B1 (KR)
Inventor: HOFER HANS-JOACHIM
IPC: B05D3/12
Filed: 1989-04-12
Granted: 1994-02-25
Abstract: 내용 없음.
Patent KR-930002018-B1 (KR)
Inventor: GISU HIROKI
IPC: G03G15/02
Filed: 1989-04-19
Granted: 1993-03-20
Abstract: 내용 없음.