baber/WOPTO huggingface dataset:
Patent KR-810000566-B1 (KR)
Title: Stabilizer for electronic fluorescnet lamp
Inventor: JO GYU HYUNG
IPC: H05B41/282
Filed: 1980-02-29
Granted: 1981-06-01
Abstract: A fluorescent lamp ballast circuit includes a tunned OSC coupled to a pulsed DC potential source and to a transformer having a first winding directly connected to the OSC and in series connection with a capacitor to form a series resonant circuit.  A second winding of the transformer inductively couples the first winding of the transformer to the OSC, a hird winding includively couples a load across the capacitor of the series resonant circuit, and a forth winding is inductively coupled to the first winding of the transformer and clamps the DC potential source to a given poential level.
Patent KR-840000577-B1 (KR)
Title: Crude oil crackung using partial combustion gases
Inventor: READ ARTHUR EDWIN JR
IPC: C10G11/20
Filed: 1981-03-14
Granted: 1984-04-23
Abstract: Crude oil or its high b.p. fractions are decomposed to lower hydrocarbons contg. high ethylene content using a combustion gas mixt. of carbonaceous fuel.  The gase mixt., contg. 5 vol.% CO in the 1200-2200≰C temp. range, is prepd. in a partial oxidation zone from fuel, oxidizing gas and process steam.  A gas mixt., contg. 5 vol.% H2 and CO2, is prepd. through the reaction between the CO gas mixt. and superheated steam in a shift reaction zone under 1200-1800≰C.  Crude oil is decomposed to a gaseous product in the decomposition zone under 600-1500≰C by an H2-water mixt., and the product is quenched by a hydrocarbon quenching oil.
Patent KR-840000471-B1 (KR)
Title: Polyethylene terephthalate resin compositions
Inventor: AKAGI NORIYUKI
IPC: C08L67/00
Filed: 1981-05-04
Granted: 1984-04-09
Abstract: Polyethylene terephthalate resin compsn. consists of (A) PET having intrinsic viscosity of 0.35-0.9(in o-chlorophenol at 35oC) and per 100 pts. wt. PET., (B) 5-200 pts. wt. inorganic filler, (C) 0.1-20 pts. wt. dimethyl or diethyl terephthalate, and (D) 0.01-5 pts. wt. of salt of carboxylic acid with Gp I or II metal or 0.1-10 pts. wt. of ionic copolymer of alpha-olefin with salt of alpha, beta, beta-unsatd. carboxylic acid contg. ion of Gp I or II metal.
Patent KR-900007702-B1 (KR)
Title: Paging device with modifiable operational characteristics
Inventor: DAVIS WALTER L
IPC: G08B3/10
Filed: 1981-06-10
Granted: 1990-10-18
Abstract: A selective call receiving device comprises a communication receiver (20) for detecting encoded signals transmitted over a communication channel in a coding format, a decoder circuit (22) coupled to the receiver for decoding detected signals, an address memory containing predetermined address information, a correlator for correlating the decoded signals with the address information and producing a control signal when there is correlation, and annunciator (32) for alerting the user of the reception of a message, an identification circuit responsive to predetermined characteristics of the detected encoded signals for identifying the coding format of the transmitted signals, and a decoding format selection circuit (30) responsive to the identification circuit.
Patent KR-860001337-B1 (KR)
Title: Process for preparation of carbostril derivatives
Inventor: TOMINAGA MICHIAKI
IPC: C07C215/06
Filed: 1982-02-16
Granted: 1986-09-15
Abstract: Carbostril deriv. (I) [R1 = hydrogen, lower alkyl, lower alkenyl, lower alkynyl; R2, R3 = lower alkyl! is prepd. for use as an intermediate of pharmacological chemical. 127 mg of succinimide 3,4- dihydrocarbostril-6-carboxylate and 39 mg of diethanol amine are dissolved in 2 ml of dimethyl formamide, and this mixt. is stirred 24 hrs. Water is added to the mixt., and is extracted with chloroform. The chloroform layer is washed, dried, and then chloroform is evaporated. The remainder is recrystalized with acetone to give 48 mg of 6-(diethanol amino carbonyl)-3,4-dihydrocarbostril.
Patent KR-870001453-B1 (KR)
Title: Electric apparatus and it's insulation handling
Inventor: SADO KENICHI
IPC: H01F5/06
Filed: 1982-08-26
Granted: 1987-08-06
Abstract: An electrical component, specially a coil, is loosely covered by an insulating layer with an impregnation of a thermosetting resin (epoxy resin).  The surface of the thermosetting resin is coated with a layer of a resin which is hardened by light radiation.  This layer is polymerised by uv radiation and the epoxy resin is finally thermohardened.  This eliminates the formation of gaps or cavities due to the see-page of thermosetting resin.
Patent KR-860001344-B1 (KR)
Title: Digital data code conversion circuit for variable word-length data code
Inventor: KUROTA HIDEO
IPC: H03M7/00
Filed: 1983-06-30
Granted: 1986-09-15
Abstract: In a preparation circuit(3) an input variable-word-length code of not more than N0 bits, where N0 equals 16, is divided into codes having word-lengths of not more than N1 bits, where N1 is less than N0 and is eight. Thus for N1 equal to 15, one word of 8 bits and a second word of 7 bits are output. These two words are input to the data code decoder(4). The converter assembles the words input ot it into 8 bit words and outputs them(DO1---DOn1). The data code converter is operated at a rate which is proportional to the data input rate times the number of divisions of the variable-word-length codes.
Patent KR-870000262-B1 (KR)
Title: Mowing rotary sawtoothed cutter
Inventor: AONO TOSHIO
IPC: A01D34/00
Filed: 1983-07-30
Granted: 1987-02-23
Abstract: This cutter is made of steel or synthetic material. A center hole is made in the cutter plate to attach on a mower driving shaft. A few large cutters(2), which have blades on both sides (4,4'), are made on the circumference of the cutter plate(1). Triangular small cutters(3) , which have blades(5,5',6,6') are arranged symmetrically on both sides of the large cutter. The radius of the larger cutter is larger than that of the small cutter. This prevents the small cutters from wear when the cutter clashes with hand materials. In a mowing work, one side of the cutters does the work and the other side of the cutters is sharpened.
Patent KR-900001289-B1 (KR)
Title: Process for the preparation of organo phosphorus compound
Inventor: HAGA DAKAHIRO
IPC: A01N57/16
Filed: 1984-11-10
Granted: 1990-03-05
Abstract: Organic phosphate compound, useful as an insecticide, is prepared. Thus, 0.8g of trans-4-(4-chlorophenyl)-5-methyl-2-thiazolidinone in 20ml of tetrahydrofuran is cooled to -78oC, treated with 2.3ml of n- hexane solution of 1.65M n-butyl lithium, and stirred for 30 min. The resulting mixture is treated with 0.78g of O-ethyl S-n-propyl phosphoro chlorido thiolate in 5ml of tetra hydrofuran, stirred for 30 min, reacted at room temperature for 3 hrs, and extracted with ethylacetate to give 0.5g of trans-Oethyl-S-n-propyl [4-(4- chlorophenyl)-5-methyl-2-oxo-3-thiazolidinyl  phosphono thiolate.
Patent KR-860001752-B1 (KR)
Title: Furnace
Inventor: PARK YONG-JU
IPC: C04B2/10
Filed: 1984-11-12
Granted: 1986-10-21
Abstract: A furance with a three exit rotating chutter has a preheating zone, a firing zone, and a cooling zone that are stable and uniform. The fall of a solid (limestone, CaO, coal) and the rising of combustion air is uniform in the furnace. At the preheating zone waste gas exchanges effective heat with a solid and the heat from the waste gas is mostly recovered. At the cooling zone CaO exchanges effective heat with combustion air and the combustion air completely recovers the heat of CaO. Therefore CaO pushed out is easily treated.
Patent KR-890000904-B1 (KR)
Title: Antiplaque dentifrice
Inventor: ALFORD CHARLES E
IPC: C07D275/06
Filed: 1984-12-08
Granted: 1989-04-13
Abstract: A method for preparing bis [4-(substituted-amino)-pyridinium  alkane saccharin is presented.  Thus, 623g N,N'-(1,10-decandiyldi1(4H)- pyridin-4-yliden)bis[1-octanamine (octenidine).2HCl in 50 C deionized water was mixed with 520g saccharin, filtered, washed with deionized water and dried to give 890g N,N'-(1,10-decandiyldi -1(4H)-pyridin-4- yliden)bis[1-octanamine (octenidin) di-saccharin, which was an antiplaque compd..
Patent KR-950010937-B1 (KR)
Title: Thermosetting adhesives
Inventor: READ MICHAEL J
IPC: B29C61/06
Filed: 1985-02-14
Granted: 1995-09-26
Abstract: Cohesive flexible curable adhesive coatings formed from a dispersion of first and second powdered curing components, preferably reactive at ambient temperatures, in a solution of a binder, the binder content being not more than 15%, preferably not more than 2.5% by weight of the dried composition. Also claimed are curable compositions having a specific advantageous reactive particle size distribution; specific epoxy--amine adduct curing agents; and specific polyalkylene oxide binders.
Patent KR-930000707-B1 (KR)
Inventor: GROENWEG WILLEM H
IPC: H04N3/16
Filed: 1985-03-22
Granted: 1993-01-29
Abstract: 내용 없음.
Patent KR-870001247-B1 (KR)
Title: Composite type laminate for preventing vibration
Inventor: SHINOZAKI MASADOSHI
IPC: G10K11/168
Filed: 1985-06-28
Granted: 1987-06-29
Abstract: The laminate comprises three layers, two being metal layers and the other a layer of a viscoelastic polymer compsn. comprising polyvinyl acetal resin and particulate carbon of 10-80 wt%.  The ratio of the carbon particle size to the thickness of the polym. compsn. is 0.5 - 1.7.  The metal layers are of steel sheets of the same or diff. thickness over 0.01 mm.  The polymer layer is at least 1/20 times the thickness of each metal layer, D.P. of the polyvinyl acetal resin 300 - 5000, acetaliztion 50 - 85 mol%, particulate carbon 20 - 60 wt% of the compsn.  Addition of particulate carbon to polyvinyl acetal gives an effect of good antivibration.
Patent KR-870001995-B1 (KR)
Title: Preparation process fo sodium tripolyphosphate
Inventor: YUN CHANG-GU
IPC: C01B25/45
Filed: 1985-06-29
Granted: 1987-11-30
Abstract: Sodium tripolyphosphate is prepd. for use as raw material of a synthetic detergent.  Phosphate is reacted with ammonia and sodium base to give sodium ammonium phosphate.  Sodium ammonium phophate is dissolved into hot water, and then is reacted with sodium base in high pressure reactor.  In this reactor, the reaction time is 5-30 mins and temp. is 80-350≰C and pressure is 1-200 atm.. Produced sodium phosphate is calcined to sodium tripolyphosphate.
Patent KR-890000797-B1 (KR)
Title: Process for preparation of n-sulfinyl compounds
Inventor: KIM YONG-HAE
IPC: C07C381/00
Filed: 1985-09-23
Granted: 1989-04-07
Abstract: N-Sulfinyl compds. of the formula R-N=S=O [I , R=alkyl, aryl, sulfone, R1C(0), ArC(O); R1=alkyl; Ar=NH , useful as the intermediates of S- contg. heterocyclic cpds. and natural cpds. synthesis were prepd.. Thus, 1.2g chlorothionyl was reacted with 2.72g imidazole in 30ml anhydr. CH2Cl2 for 10min at room temp. and filtered.  The filtrate was treated with 0.93g aniline in 10ml anhydr. CH2Cl2  for 20min at room temp. with stirring and the solvent was removed by vacuum- evapn..  The residual filtrate was vacuum-distld. at 1mmHg to give 73.4% N-sulfinylaniline.
Patent KR-930001117-B1 (KR)
Inventor: STROMAN DAUID W
IPC: C07H21/04
Filed: 1985-10-29
Granted: 1993-02-18
Abstract: 내용 없음.
Patent KR-930009241-B1 (KR)
Inventor: MIYAMOTO TETSUYA
IPC: C09B62/10
Filed: 1986-03-08
Granted: 1993-09-24
Abstract: 내용 없음.
Patent KR-910008072-B1 (KR)
Title: Guide wire communication system and method
Inventor: SHERMAN LEIGH E
IPC: G05D1/02
Filed: 1986-04-09
Granted: 1991-10-07
Abstract: In a guidance system for guiding a plurality of unmanned vehicles along a traffic lay out comprising a plurality of guide wires, a guide wire communications system is disclosed which is provided with a plurality of data communications circuits which can be linked together in a logical tree structure to form an extensive network. The communications circuits are connected to a vehicle traffic control computer which is provided with means for composing a coded vehicle instruction for assigning tasks to said unmanned vehicles. Various parts of the system, including for example, segments along guide wires, are designated as resources. The computer uniquely allocates those resources to each vehicle which are necessary for the performance of the tasks assigned to that vehicle. The vehicle traffic control computer further includes polling means which enables it to poll the status of each vehicle at varying time intervals and to receive a response from said vehicle when the computer next polls the vehicle. The guide wire communications system can communicate coded instructions to the vehicles either individually or as a group.   The guide wire communications system further comprises a network connecting the computer and the communications circuits which is provided with means for preventing reception of data transmissions from more than one vehicle at a time. The communications circuits comprise data transmitters provided with means for generating a communications wave with low frequency and low power but high data transmission rate. The data transmitters further includes means for encoding and decoding digital data using at least two data transmission frequencies. Said means comprise a circuit for digitally constructing a string of single cycles of cosine wave forms of selected frequencies. The communications circuits are provided with receivers for detecting cosine wave segments, transforming such segments into sine wave segments and recovering digital data at a rate substantially equal to the lowest data transmission frequency employed. The data communications circuits also include means for selecting low impedence or high impedence characteristics for a guide wire depending on the function of the guide wire as a data receiving antenna, a data transmitting antenna or a tracking-signal carrier, permitting low power signals to be used. The guidewire communications system further includes a communications circuit on each of a plurality of vehicles which comprises a low frequency, high gain transmit antenna composed of a substantially figure-eight pattern of conductors mounted on the bottom of the vehicle; a transmitter and a receiver substantially as described above, memory for storing a plurality of instructions for serial execution by the vehicle essentially independently; and means for determining estimated completion time of assigned tasks to permit minimum polling of each vehicle by the vehicle traffic control computer at varying time intervals.
Patent KR-880001261-B1 (KR)
Title: Process for the preparation of polyvinyl alcohol articles of high strength and modulus
Inventor: SHELERKENS RONALD MIKAEL ALEXS
IPC: B29D7/00
Filed: 1986-08-21
Granted: 1988-07-16
Abstract: A method for prepg. articles having superior tensile strength and modulus from polyvinyl alcohol (PVA) comprises (i) converting 5-50 wt.% PVA (wt. average m.w.=2.5X104-5X105) soln. to a material contg. water and capable of plasticizing at above m.p. in water, (ii) quick cooling at below f.p. to obtain gel material (GA) having homogeneous gel structure, (iii) eliminating most of water at below gel's m.p. and (iv) stretching GA at above free transition temp. of PVA but below dissocn. temp. during or after elimation of water and at stretching ratio of at least 10:1.
Patent KR-900007723-B1 (KR)
Title: Regenerator for a regenerative heating system
Inventor: WARD TREVOR
IPC: F28D17/00
Filed: 1986-11-19
Granted: 1990-10-19
Abstract: A regenerator for a regenerative heating system comprising an inner chamber for storing a heat storage bed in the form of discrete particles, a closable inlet for introducing fresh particles into the inner chamber to replace contaminated particles and a closable outlet for removing the contaminated particles from the inner chamber so that fresh particles may be introduced, an outer chamber surrounding the inner chamber and serving to receive waste gas from the inner chamber after passage through the inner chamber or to supply air for heating to the inner chamber, the outer chamber serving either to discharge the waste gas from the regenerator or to receive air for heating in the regenerator.
Patent KR-900002592-B1 (KR)
Title: Panel and shadow mask sealing apparatus in color cathode ray tube
Inventor: MARUYAMA ASAO
IPC: H01J9/22
Filed: 1986-11-24
Granted: 1990-04-20
Abstract: The panel is placed into position overlying the shadow mask so that the inwardly-directed pins on the interior of the panel are in general vertical registry with the apertured spring elements about the outer periphery of the shadow mask.  An alignment stand is provided for each sprng element to vertically align each spring element with its corresponding panel pin.  Each alignment stand includes a dummy pin which may be inserted into the aperture of the spring element of the shadow mask and a rod arm having a guide groove which may be raised so that at its upper limit position the arm provides guide grooves in which the inwardly projecting pins of the panel may be engaged.
Patent KR-910009252-B1 (KR)
Inventor: SHIMADA SYUNSEUKE
IPC: E02D3/12
Filed: 1986-12-15
Granted: 1991-11-07
Abstract: 내용 없음.
Patent KR-950014622-B1 (KR)
Inventor: NUGGEHALLY S JAYANT
IPC: G10L13/00
Filed: 1985-08-26
Granted: 1995-12-11
Abstract: 내용없음.
Patent KR-920010709-B1 (KR)
Inventor: KING WILLIAM L
IPC: A45C3/00
Filed: 1985-11-12
Granted: 1992-12-14
Abstract: 내용 없음.
Patent KR-910006167-B1 (KR)
Inventor: OLSSON BILLY E
IPC: H01R13/658
Filed: 1985-09-30
Granted: 1991-08-16
Abstract: 내용 없음.
Patent KR-950006513-B1 (KR)
Inventor: TOM GLENN M
IPC: C01B7/03
Filed: 1987-03-19
Granted: 1995-06-16
Abstract: 내용 없음.
Patent KR-890005243-B1 (KR)
Inventor: KIM YONG-JE
IPC: H04N5/278
Filed: 1987-04-07
Granted: 1989-12-18
Abstract: 내용 없음.
Patent KR-900008469-B1 (KR)
Inventor: SON KUN-PYONG
IPC: C09B62/01
Filed: 1987-06-10
Granted: 1990-11-22
Abstract: 내용 없음.
Patent KR-900008006-B1 (KR)
Title: Relatively low molecular weight polypeptide as renin inhibitors
Inventor: ROSATI ROBERT L
IPC: C07K5/02
Filed: 1987-10-30
Granted: 1990-10-29
Abstract: 4-Amino-5-cyclohexyl-3-hydroxypentanoic or 5-amine-6cyclohexyl-4- hydroxyhexanoic acid derivs. of formula (I) and their salts are prepared. In (I), A= indolyl, 2,3-dihydroindolyl, benzofuranyl, 2,3- dihydrobenzo (b) pyranyl, 2-oxobenzo (b) pyranyl, 2benzimidazolyl, benzo(1,4)dioxan-2-yl, benzo(1,3)diexanyl or 1,2,3, 4- tetrahydroisoquinolinyl; n= 0 or 1; B= Me, n-Pr or 1H-imidazol5- ylmethyl; D= 2-carboxy-1-pyrrolidinyl, OR or NHR; R= C1-6 alkyl or phenyl, both opt. substd. by NH2, OH, COOH or C2-7 alkoxycarbonyl, provided that R is not CHNH2 or CH2OH; Y= i-Bu or allyl.
Patent KR-900006320-B1 (KR)
Title: Light emission diode array
Inventor: KIM KI-JUN
IPC: H01L27/15
Filed: 1987-12-17
Granted: 1990-08-28
Abstract: The method is for expanding the soldering area of gold wire to increase circuit integration ratio. The array includes a light emitting part (13) at the center of substrate (12), and electrodes (14) for connecting the gold wire between the light emitting part and the outer circuit. The electrode is composed of two parts, which one (A) has larger width than the other (B). The  gold wire is solded at the part (A). so that the effective soldering area for the gold wire is enlarged.
Patent KR-950014867-B1 (KR)
Inventor: ENGEL WOLFHARD
IPC: C07D487/04
Filed: 1987-12-19
Granted: 1995-12-16
Abstract: 내용 없음.
Patent KR-940009649-B1 (KR)
Inventor: OLOVSON GUDMAR
IPC: A44B1/04
Filed: 1987-04-15
Granted: 1994-10-15
Abstract: 내용 없음.
Patent KR-970004118-B1 (KR)
Inventor: DONARUDO MOOTEIMAA MERUZU
IPC: G06T15/40
Filed: 1988-04-20
Granted: 1997-03-25
Abstract: 내용없음
Patent KR-910009088-B1 (KR)
Inventor: DAMURA YOSHIHAROO
IPC: B01F3/04
Filed: 1988-07-02
Granted: 1991-10-28
Abstract: 내용 없음.
Patent KR-910005934-B1 (KR)
Title: Contrast/brightness progamming circuit
Inventor: KIM YEONG-SUK
IPC: H04N5/57
Filed: 1988-07-05
Granted: 1991-08-08
Abstract: The circuit for controlling both of contrast  and  brightness levels with one push buttom comprises a  brightness  control  part (10), a contrast control  part  (20),  and  a  contrast/brightness control part (30). The  brightness  control  part  comprises  TRs. (TR1-3) controlling the power supply  with  a  volume  (VR1).  The contrast control part comprises  TRs.  (TR5,6,9)  controlling  the power supply with a volume (VR2),  a  TR.  (TR10)  for  the  image signal input, and a TR. (TR11) for the image signal  transmission. The contrast/brightness  control  part  comprises  a  counter  (1) operated by a setting switch (SW2), a D/A converter (2) converting the output of the counter, an OP amp. (OP1) detecting  the  output level of the converter, an OP amp. (OP2) controlling the level,  a setting switch (SW1), and TRs. (TR113.14.
Patent KR-910006897-B1 (KR)
Inventor: KAWAI KAZUHIDE
IPC: B22D41/54
Filed: 1988-09-03
Granted: 1991-09-10
Abstract: 내용 없음.
Patent KR-950003181-B1 (KR)
Title: Optical-magnato medium
Inventor: KIM JIN-HONG
IPC: G11B7/243
Filed: 1988-10-28
Granted: 1995-04-01
Abstract: The material of recording media is made by using amorphous RE-TN alloy layer, (RbDeCo)1-xAx which has vertical magnetic axes to the face of thin film. A is one or more elements of light rare-earth elements such as Ce, Pr, Nd, Pm, Sm and Eu, and x is 0<x<0.2.
Patent KR-910009848-B1 (KR)
Title: Video data density controlling apparatus of video file system
Inventor: CHONG IL-SEOK
IPC: G11B20/10
Filed: 1988-12-29
Granted: 1991-11-30
Abstract: The circuit controls the brightness of  the  image  within  a certain region. It includes an recording media (1) for storing the video file data, a synch. detector (5) for detecting vertical  and horizontal synch. signal from composite video, a data  input  part (6) for generating the region set/control signal, a controller (7) for generating an address control signal, a comprison  address  of the density control  region  and  the  density  control  data,  an address comparator (9) and an adder (12) for adding the outputs of the 1st and the  2nd  D/A  converter  (4,11)  and  generating  the density-compensated video signal to a monitor.
Patent KR-950008279-B1 (KR)
Inventor: ELISHEWITZ SANL L
IPC: C07C37/14
Filed: 1987-09-15
Granted: 1995-07-27
Abstract: 내용 없음.
Patent KR-960000824-B1 (KR)
Title: Apparatus of data reproduction
Inventor: KURZ ARTHUR
IPC: G11B7/08
Filed: 1988-02-10
Granted: 1996-01-13
Abstract: PCT No. PCT/EP88/00097 Sec. 371 Date Oct. 11, 1988 Sec. 102(e) Date Oct. 11, 1988 PCT Filed Feb. 10, 1988 PCT Pub. No. WO88/06336 PCT Pub. Date Aug. 25, 1988.An arrangement for selectively playing back and recording data in which a rotating disk-shaped recording medium is provided with data storage tracks. An optical system reads the stored data by guiding a light beam along the data storage tracks. The data read by the optical pickup system is decoded by a decoder which has an error output that emits a pulse for every bit error. The light beam strikes the disk-shaped recording medium at an angle and has a vector component which is tangential to the recording medium or disk, so that when the angle is 90 DEG , the vector component is zero. The bit errors are applied to a counter that provides the corresponding bit-error rate and provides a signal for controlling the adjustment for varying the vector component so as to maintain the bit-error rate below a predetermined threshold.
Patent KR-960010568-B1 (KR)
Title: Optical recording/reproducing apparatus & method
Inventor: HIROSHI OGAWA
IPC: G11B20/10
Filed: 1988-03-31
Granted: 1996-08-02
Abstract: Auxiliary synchronising signals are recorded onto predetermined positions of a recording medium on which the synchronising signals have been periodically recorded in advance, using the same recording means as the one for recording data between synchronising signals. The phase of data read clock signals, whose phase is loced by the synchronising signals, is controlled based on the auxiliary synchronising signals such that the data re favourably read from the recording medium.
Patent KR-920004102-B1 (KR)
Inventor: NOMURA YOSHIO
IPC: G10H3/18
Filed: 1989-02-28
Granted: 1992-05-25
Abstract: 내용 없음.