baber/WOPTO huggingface dataset:
Patent ES-2612143-B1 (ES)
Title: Máquina trenzadora
Inventor: RATERA FRANCITORRA JOSEP
IPC: D04C3/38
Filed: 2015-11-11
Granted: 2018-01-17
Abstract: Máquina trenzadora.#Comprende unos medios de alimentación (1) que mueven unas platinas (2) sobre las que se disponen unos mecanismos portabobinas (3) y porque comprende: al menos una guía (8) en forma ocho por cuyo interior se desplaza un elemento guiador (5) perteneciente al mecanismo portabobinas (3), y un primer eje (6) conectado con los medios de alimentación, perteneciente a la platina, que finaliza superiormente en un primer piñón (7) al que se engrana al menos un piñón satélite (4) que a su vez está engranado con un segundo piñón (9) perteneciente al mecanismo portabobinas; en donde al rotar el primer eje hace rotar a su vez al primer piñón que arrastra el piñón satélite moviéndolo, arrastrando a su vez dicho piñón satélite al segundo piñón que desplaza al mecanismo portabobinas de acuerdo con el recorrido de la guía, quedando asimismo la misma cara del mecanismo portabobinas encarada hacia un punto de referencia predeterminado durante todo el recorrido por la guía.
Patent HR-P20050169-B1 (HR)
Title: Methods of using dinitroaniline compounds as microcapsule formulations
Inventor: SWEAT JONATHAN
IPC: A01N37/18
Filed: 2005-02-22
Abstract: The present invention describes a method of inhibiting the growth of an undesired plant by contacting the plant with a herbicidally effective amount of a microcapsule composition. The microcapsule composition includes a dinitroaniline compound and the microcapsule has a median diameter from about 3 micrometers to about 10 micrometers. The present invention further describes a composition for inhibiting the growth of an undesired plant containing a herbicidally effective amount of a microcapsule composition. The microcapsule composition includes a dinitroaniline compound and the microcapsule has a wall with a thickness from about 1 wt. % to about 10 wt. %.
Patent HR-P20050604-B1 (HR)
Inventor: KOHL BERNHARD
IPC: C07D401/12
Filed: 2005-06-29
Abstract: Izum se odnosi na novi postupak priprave optički čistih PPI sa sulfinilnom strukturom, primjenom kiralnog cirkonijevog kompleksa ili kiralnog hafnijevog kompleksa.
Patent JO-1217-B1 (JO)
Title: method for the preparation of anew plaster , kiln for carrying out said method and applications of said new plaster
Inventor: DUSSEL CHRISTIAN GERMAIN LOUIS
Filed: 1982-09-23
Granted: 1985-04-20
Abstract: The present invention relates to a method for preparing a new plaster by heating a material known to be able to produce plaster, wherein the starting material used is a product in fine particles form and said method consisting in: preparing a mixture of the said particles with water, pressing said mixture into a round slab or cake of pre-determined thickness, heating the said slab to a temperature varying between about 250c and 500c for long enough to transform the starting material into plaster, hot-drying the resulting product and crumbling same to arrive at the new plaster in powder form The invention also relates to the new plaster obtained according to said method and its applications particularly in agriculture
Patent JO-1255-B1 (JO)
Title: Heterocyclic compounds
Inventor: JOHN COLTN EMMET
IPC: C07D401/12
Filed: 1983-06-01
Granted: 1985-04-20
Abstract: Pyrazinone derivatives of the formula (I) Or a pharmaceutically acceptable salt thereof, wherein R1 , R2 and R3 are independently hydrogen, or C1-4 alkyl, and R4 is hydrogen, a c1-6 alkoxycarbonyl group optionally substituted by amino, hydroxyl, C1-4 alkoxy or carboxy (wherein the substituent is not on the carbon atom adjacent to the –CO-O-moiety) or R4 is a group –CO(NR5)n-R6 wherein n is zero or one, R6 is hydrogen, optionally substituted C1-6 alkyl, optionally substituted phenyl, or optionally substituted pyridyl, and R5 is hydrogen, C1-6 alkyl or R5 and R6 form together with the nitrogen atom to which they are attached apiperidine, morpholino, piperazine or N-(C1-6) alkylpiperazine ring, are described Processes for their preparation are described , involving inter alia novel phenyl pyrazinone intermediates, their use in pharmaceutical compositions is described, as is their use as inotropic agents.
Patent JO-1989-B1 (JO)
Title: A system for removing bubbles from drinking water pipes
Inventor: LANG GERHARD
IPC: E03B7/07
Filed: 1997-10-20
Granted: 1999-05-15
Abstract: A SYSTEM FOR REMOVING BUBBLES FROM DRINKING WATER PIPES
Patent KR-790001481-B1 (KR)
Title: Process for preparation of substituted phenyl guanidines
Inventor: HERBERT THOMAS
Filed: 1975-04-30
Granted: 1979-10-23
Abstract: Title compds. [I; R,R'= -COR4 or compd III. (R4 = H, substituted alkyl, cycloalkyl, aryl, amino, alkoxy, aralkyl, R5 = substituted alkyl, alkenyl, alkinyl, R6 = substituted alkyl, cycloalkyl, alkoxy, alkenyloxy, alkinyloxy, aryl, aralkyl, alkenyl, alkinyl) R2,R3 = H, substituted alkyl, alkoxy, amino, halogen, halogenoalkyl, nitrile, alkylthio, acyl, carboalkoxy, X = O,S, sulfonyl, sulfinyl , useful as anthelmintics, were prepd. by reacting substituted aniline derivatives (II) with isothiourea.
Patent KR-790001233-B1 (KR)
Title: Process for preparing of heterocyclic copounds
Inventor: SHAW A
Filed: 1976-01-30
Granted: 1979-09-17
Abstract: 6-Arylpyrolo (1,2-a) imidazoles (I; R1,R2,R3,R5 are the same or not alkyl having 1-4 H or C, R4 = H or C1-C4 alkyl, Ar = aromatic ring having more than one substituted group) useful as antihypertensive and sedative, were prepd.  In a typical example, II which was prepd. by treating III (Z = halogen, alkoxy, alkylthio) with H2N-CHR1-CHR2-X (X = halogen, OH, sulfonyloxy) or IV, was cyclized to give I.
Patent KR-810001379-B1 (KR)
Title: Non-chilled method for centrifugal casting
Inventor: FUKUTA SIKEMI
IPC: B22C9/06
Filed: 1976-08-05
Granted: 1981-10-17
Abstract: Steel molds (D) are coated with a powder alloy nickelalumina or nickel - chrome (for example ; weight percent rations 80 : 20) by plasma spraying, then the surface(10b) is formed > 0.3 mm of ceramic coating (10c).  So the cast iron or other metal melts (m) are poured around the steel.  The coating prevents cracking of the cast iron.
Patent KR-810000656-B1 (KR)
Title: Preparing oxalic acid esters
Inventor: ROMANO UGO
IPC: C07C67/36
Filed: 1978-04-07
Granted: 1981-06-16
Abstract: Oxalic acid alkyl or aralkyl ester were prepd. by treating a starting material such as ROH with CO in the presence of a Pd complex catalyst chosen from Pd(II) complex of the general formula [(PdXXI)LL I; L, LI = phosphine; X, XI =carboxylate Ligand; n = 2-4; L2 = aliphatic or aromatic phosphine; X, Y = 1; LIV =tertiary phosphine; R = alkyl or aralkyl , Pd(O) complex of (PdL2)n, Pdx(CO)yLzIV at 50-200≰C.
Patent KR-820000266-B1 (KR)
Title: Apparatus for manufacturing a slide fastener stringer having a woven coiled element
Inventor: YOSHIDA HIROSHI
IPC: A44B19/12
Filed: 1978-08-17
Granted: 1982-03-15
Abstract: An apparatus for manufacturing a slide fastener stringer having a woven coiled fastener element (a) includes a coiling rotor(8,9) assembly for winding a monofilament(e) orbitally around a mandrel(20) extending substantially warpwise so as to shape the monofilament into a helical coil which, as the fastener element, is interlaced with weft threads as they are woven with warp threads to produce the slide fastener stringer.  The rotor assembly comprises a first and a second wheel rotatable respectively on a first and a second floating shaft interconnected by a connecting rod out of coaxial alignment with each other.
Patent KR-790001661-B1 (KR)
Title: Method for decomposition nitrosonaphtol cobalt salts
Inventor: KWAK HS
Filed: 1978-12-20
Granted: 1979-12-07
Abstract: The title method for the separation and recovery of nitrosonaphtol and cobalt from ni- trosonaphtol cobalt salts produced from removal of impurity cobalt was described.  Nitro- sonaphtol cobalt salts in 40-80% of strong alkali soln. were heated at 100-150≰C, and separated to give nitrosonaphtol alkalimetal salt and cobalt composition.
Patent KR-820001079-B1 (KR)
Title: Method for preparation of aromatic aldehyde
Inventor: WITT P
IPC: C07C45/41
Filed: 1978-12-23
Granted: 1982-06-21
Abstract: Arom. aldehydes were prepd. from the acids by forming mixed anhydrides with ClCO2R (R = Et, Me2CH) and hydrogenating over a Pd-BuSO4 poisoned with S and quinoline. Thus, 14.2 g 10% Pd/BaSO4 and 0.1 ml a soln. contg. 3 X 10-3 part S and quinoline were added to 10.1 mol 3, 4, 5-(MeO)3C6H2CO2CO2Et in 300 ml THF and the mixt. hydrogenated for 12 hr at ordinary temp. and pressure to give 17.64 g 3, 4, 5-(MeO)3C6H2CHO.
Patent KR-880002017-B1 (KR)
Title: Device for applying blot-shapped coverings by electro-plating
Inventor: PIPERS H CHRISTIAN
IPC: C25D5/02
Filed: 1982-03-05
Granted: 1988-10-12
Abstract: A device for applying blot-shaped coverings to metal or metallised tapes (49) for their partial electroplating, comprising a guide member along which a metal and/or metallised tape can be guided and an endless masking member co-operating with the tape and the guide member and having passages, the shape of which matches the desired blot-shaped covering, characterised in that the masking member is formed by independent segments (53) each of which has at least one passage (52) sealing means being arranged between the segments the structure of said means being such that whilst maintaining the sealing relationship between the segments. They allow a movement of the segments relative to one another in the direction of length of the masking member.
Patent KR-860001367-B1 (KR)
Title: Process for preparing penicillanic acid esters
Inventor: JASYS VYTANTAS JOHN
IPC: C07D519/00
Filed: 1982-03-22
Granted: 1986-09-17
Abstract: Title compds. I [R=H, (b), (c); R1=azido, amino, 1-methoxycarbonyl propen-2-yl amino, carbobenzylamino; R2=H, OH! were prepd. Thus, a mixt. contg. 30 ml methylene chloride and 4.03 g 6(α-aminophenyl acetamido) penicillanic acid in 30 ml water was adjusted to pH 8.5 with tetrabutylammonium hydroxide and extd. with 30 ml methylene chloride to give 6.0 g chloromethyl-6-(α-aminophenyl acetamido) penicillanium salt. This resulting salt 5.3g was mixed with 35 ml chloroiodo methane, stirred at room temp. for 3 hrs., and chromatog. on 200 g silica gel plate to give chloromethyl-6-(α- aminophenylacetamido) penicillanate.
Patent KR-860001099-B1 (KR)
Title: A.c generator
Inventor: IDANI KOTARO
IPC: H02K1/16
Filed: 1982-05-31
Granted: 1986-08-07
Abstract: The a.c. dynamoelectric machine, which has double-layed winding, has multiple slots provided in the periphery of the iron core. The double layered multiple coils are made of an upper position conductor(26) and a lower position conductor (27). The machine has N poles which are partitioned into n sections for providing a N-n winding form. The number of poles is greater than 14 and also an even number except for multiples of four.
Patent KR-890000582-B1 (KR)
Title: Method of manufacturing a fiber optic directional coupler
Inventor: SHAW HERVERT J
IPC: G02B6/28
Filed: 1982-09-10
Granted: 1989-03-21
Abstract: The fibre optical directional coupler has cladding lapped with lapped portion coated with a substance of the same refractive index as strand.  This method is required for strands used in a directional coupler in which the cladding of two fibre strands is removed to form a planar tacing surface.  The substance has an index of refraction, approximating that of the strand.  It is then determined whether the portion of strand illumination which escapes from the lapped portion has reached a predetermined value to determine whether the lapping has reached the critical zone of the strand.
Patent KR-890004628-B1 (KR)
Title: Refractory lining for molten metal handling vessel
Inventor: ROBERT CHRISTOPHER T
IPC: F27D1/00
Filed: 1982-12-20
Granted: 1989-11-21
Abstract: The inner lining for molten metal handling vessel consists of 75-95 wt. % particle zircon and sintered bauxite (3:1-1;1 by weight), 2- 20wt.% binder e.g. organic binder, inoganic binder, 10wt.% refractory particle filler, 2-8wt.% fiber e.g. organic fiber or synthetic fiber.
Patent KR-870000786-B1 (KR)
Title: Process for preparing triazol derivatives
Inventor: RICHARDSON KENNETH
IPC: A01N43/653
Filed: 1984-01-28
Granted: 1987-04-18
Abstract: Triazol derivs. of formula (I) and its pharmaceutically (or agriculturally) acceptable salts are prepd. by reacting a 1,2,4triazol or its base salt with (II) at 50-130 deg C. m is 0,1,2,3, or 4; n is 0,1,2,3, or 4; Q is leaving gp. e.g. Cl, Br, I, CF3SO2O-, p-toluene sulfonyl oxy. (I) are useful as anti-fungus agent. (II) is obtd. from rxn. of CF3(CF2)nMgI or CF3(CF2nMgBr with QCH2CO(CF2)mCF3.
Patent KR-930010455-B1 (KR)
Inventor: WATANABE SHIZUHISA
IPC: G02F1/133
Filed: 1985-06-10
Granted: 1993-10-25
Abstract: 내용 없음.
Patent KR-890000756-B1 (KR)
Title: Unit injector for internal combustion engine
Inventor: NOFAKI SHINYA
IPC: F02M47/00
Filed: 1985-09-30
Granted: 1989-04-03
Abstract: A unit injector for an IC engine includes an injection nozzle (3), a solenoid valve (17), a plunger barrel (2), a pumping plunger (18), a fuel inlet passage (13) and an overflow passage (16).  The pumping plunger has axial grooves (27,28) and a partcircumferential groove (29) to connect a plunger chamber (2a) with the inlet and the overflow passages.  In the normal position of the plunger, the plunger chamber communicates with the inlet and the overflow passages through the grooves.  In the start position, the plunger chamber communicates with the inlet passage but hot with the overflow passage.  In the emergency stop position, neither one communicates with the plunger chamber.
Patent KR-890004071-B1 (KR)
Title: Method for preparing polyolefin gel having high tensile strength and modulus
Inventor: WASTIANSEN KORNELIS W M
IPC: C08J7/02
Filed: 1986-02-11
Granted: 1989-10-18
Abstract: A process for preparing high stretchable gel articles on the basis of high-molecular polyolefins, which process is characterized in a shaped solvent containing or solvent-free article of a polyolefin with a weight-average molecular weight of at least 4X105  is contacted with a swelling agent at a temp. above the dissolving temp. of the polyolefin and below the temp. at which the polymer and/or the swelling agent will decompose for such a length of time (min.) that is high than 0.1 D2 and lower than 100 D2, where D represents the thickness, respectively the diameter, of the article in mm, until the swollen article contains 60-99 wt.% swelling agent and the swollen article is subsequently cooled to below the gelling temp.
Patent KR-890003003-B1 (KR)
Title: Preparation of anti-flamable resin
Inventor: KIM YUN-CHOL
IPC: C08K5/53
Filed: 1986-04-09
Granted: 1989-08-18
Abstract: A flame-retarded resin is prepd. by copolymg. a synthetic resin compsn. with (I) to contain 500-50,000 ppm of P atoms in the prod.. In the formula, R1 and R2=same or not, C1-10 halohydrocarbons, may be selected from R3 and R4; R3 and R4=same or not, hydroxy alkyl or carbox alkyl; A=C0-10 alkylene or phenylene; n1 and n2=0-4 integer. The product showed a good flame retardation with stability to heat.
Patent KR-950006478-B1 (KR)
Title: Making method of self-aligned bipolar tr.
Inventor: BOHN WILLI R
IPC: H01L21/331
Filed: 1986-12-17
Granted: 1995-06-15
Abstract: Self-adjusted bipolar transistors having reduced extrinsic base resistance are produced by forming an emitterterminal from a polysilicon layer structure and etching free the polysilicon layer structure using the emitter layer structure as a mask. Sidewall insulating layers are provided with a metallically conductive layer. This layer is self-adjusting in relation to the emitter zone and surrounds the emitter in an annular formation. The structure improves the foursided base wiring around the emitter and is used in the production of highly integrated bipolar circuits.
Patent KR-890002700-B1 (KR)
Title: Low over-voltage electrodes for alkaline electrolytes
Inventor: MATHUR INDRESH
IPC: C25B11/06
Filed: 1987-05-04
Granted: 1989-07-24
Abstract: Low over-voltage electrodes for alkaline electrolytes comprise an electrocally conductive substrate and the coated metal on the substrate with oxides of cobalt and tungsten.  The substrate is nickel, stainless-steel, tifanium or Ni-coated metal substrate.  Said electrode is useful esp. in cells where O2 is evolved at the amode, and useful for the electrolysis of water.
Patent KR-960000880-B1 (KR)
Inventor: EWALD H KURT
IPC: E21B10/38
Filed: 1987-06-15
Granted: 1996-01-13
Abstract: 내용 없음.
Patent KR-960011384-B1 (KR)
Inventor: KATO TSUGUHIRO
IPC: C07D401/04
Filed: 1987-09-05
Granted: 1996-08-22
Abstract: 내용 없음.
Patent KR-900008321-B1 (KR)
Title: Preparation of reinforced corrugated carboard
Inventor: KIM JAE-CHOL
IPC: D21H11/12
Filed: 1987-09-15
Granted: 1990-11-12
Abstract: A process for producing a reinforced corrugated cardboard comprises spray-coating the both sides of a core paper and a raw paper of the corrugated cardboard with reinforcing agent [pH= 4-10, viscosity= 1- 15  in the spraying nozzle on the way of dry drums, pressing the coated agent to the inside and outside of the papers by the rollers, and drying the papers by the dryer. The cardboard has a high strength, and is used for packing paper, kraft paper and waterproof paper.
Patent KR-960006579-B1 (KR)
Inventor: KANG DATZHIKO
IPC: C12P19/14
Filed: 1987-10-24
Granted: 1996-05-20
Abstract: 내용 없음.
Patent KR-910001529-B1 (KR)
Title: Automatic accompaniment circuit and its control method of the electronic organ
Inventor: PARK SE-GAB
IPC: G10H7/00
Filed: 1987-11-05
Granted: 1991-03-15
Abstract: A microprocessor-based chords for automatic performance plays automatically  and  repetitively  music  while   keeps   providing variations on chord and bass according  keyboard  keychanges.  The conventional method needs a lot of playing pattern  memory  space, harmony discriminating circuit and several blocks to control those components to generate the bass and chord, which makes the old one very complex. A stored program in micro-com (3) decodes  lines  of keys and generates the corresponding  chords  and  bass  sound  by sound source generating circuits (9).
Patent KR-900005437-B1 (KR)
Title: Loading apparatus using cdpls pict-up motor
Inventor: YUN HWA-YOUNG
IPC: G11B17/038
Filed: 1987-12-15
Granted: 1990-07-30
Abstract: The aparatus for optical disk player such as CDP or VDP, emplays a pick-up driving motor for bath pick-up sliding and tray loading in combination. The apparatus includes movable pick-up (6) on guide shaft (8)(8'); pick-up driving motor (3) mounted on base (1); disk (12) loaded or unloaded on the player (11); B rack (18) and A rack (13), on (6) meshed with pick-up pinion gear (15) fixed on rotating shaft (2a) of gear box (2); tray pinion gear (17) having gear (16) meshed with pick-up pinion gear (15).
Patent KR-950012969-B1 (KR)
Title: Modular wafer transport and processing system
Inventor: STARK LAWRENCE R
IPC: B65G1/06
Filed: 1987-04-06
Granted: 1995-10-24
Abstract: A modular wafer processing machine (1, 2) which is based on interconnected handling units (400, 40a, 40b) having wafer handling arms (252, 256). Each unit can pass a wafer to another unit in the same vacuum environment to a processing module (30f, 30g, 300a-e).
Patent KR-900006856-B1 (KR)
Title: Oxime-ethers of 2,6-dioxabicyclo-(3,3,0) octanone
Inventor: LEITOLD MATIAS
IPC: A61P9/00
Filed: 1988-02-12
Granted: 1990-09-22
Abstract: Oxime ethers of 2,6-dioxabicyclo [3.3.0  octanones of formula (I) and their acid salts are prepared. In (I), R1 and R2 are each H, C1-6 alkyl, omega-theophyllin-7-yl-alkyl, 2-benzo[1,4 -dioxinylmethyl or benzyl; R1 and R2 form with nitrogen atom to which they are attached piperazine substd. by alkyl, phenyl or methoxyphenyl, theophyllin-7- yl, or theobromin-1-yl. (I) are useful in the treatment of cardiac and circulating diseases.
Patent KR-950012133-B1 (KR)
Inventor: DEAVER DON A
IPC: F01N1/08
Filed: 1988-05-13
Granted: 1995-10-14
Abstract: 내용 없음.
Patent KR-910008062-B1 (KR)
Inventor: FUJIGAKI TAKASHI
IPC: G02B6/04
Filed: 1988-06-18
Granted: 1991-10-07
Abstract: 내용 없음.
Patent KR-950003643-B1 (KR)
Title: Shadow mask check device
Inventor: U DONG-MIN
IPC: H01J9/42
Filed: 1988-06-28
Granted: 1995-04-17
Abstract: The image of shadow mask is obtained without the light interference using the image acqusition apparatus. The image acqusition apparatus includes a slit (3) having through holes, a convex lens (4) for forming the light beam in parallel, a screen (6) for focusing the shadow mask image, a conveyer (5) for sending the shadow mask between the convex lens and the screen (6), a line scan camera (7) for aquisiting the image focused on the screen, and an image processor unit including a video memory (8), and a monitor (9).
Patent KR-920008316-B1 (KR)
Inventor: YAMAKUCHI GOICHI
IPC: H02G15/08
Filed: 1988-07-04
Granted: 1992-09-26
Abstract: 내용 없음.
Patent KR-970004349-B1 (KR)
Inventor: HEINZ STEHLE
IPC: G21C3/07
Filed: 1988-07-21
Granted: 1997-03-27
Abstract: 없음
Patent KR-910002935-B1 (KR)
Title: Voice and data transmitting circuit by threelines
Inventor: KIM YANG-SUN
IPC: H04M7/00
Filed: 1988-08-31
Granted: 1991-05-10
Abstract: The circuit  transmittes  the  voice  and  the  digital  data through three lines between a main body and a terminal so that the line can be connected regardless  of  the  polarity.  The  circuit includes  a  COMBOCODEC  (10)  for  converting  the   pulse   code modulation (PCM) signal to the analoy audio signal, a first hybrid circuit  (1) for  transmitting  the  audio  signal  between   the COMBOCODEC and the subscriber's terminal, a first transformer (T1) for matching the inpedances  of  the  providing  the  first  power applied to the secondary center tap  (T122)  to  the  terminal,  a second hybrid circuit (14) for  amplifying  and  transmitting  the audio  signal transmitted  from  the  audio  signal  line  and  a transmission terminal (TX1), and a  second  transformer  (T2)  for providing the first (Vp) to the terminal.
Patent KR-970002168-B1 (KR)
Inventor: ANTHONY MAGLICA
IPC: F21V14/02
Filed: 1988-10-06
Granted: 1997-02-24
Abstract: 내용없음.
Patent KR-920002085-B1 (KR)
Inventor: EMERY WILLIAM D
IPC: C11D3/39
Filed: 1988-10-22
Granted: 1992-03-10
Abstract: 내용 없음.
Patent KR-970000740-B1 (KR)
Inventor: DIETZ ERWIN
IPC: C09D7/00
Filed: 1988-11-26
Granted: 1997-01-18
Abstract: 내용 없음.
Patent KR-910005063-B1 (KR)
Title: Method connecting pipes of tieing up types
Inventor: KIM JONG-SUK
IPC: F16L13/00
Filed: 1989-01-14
Granted: 1991-07-22
Abstract: A cylinderical opening section (4) is formed to that  a  core (3') for molding pipe of an  inner  mold  (3)  and  tip  (1')  for molding pipe of an outer  mold (1)  respectively  correspond  with oute and inner diameters of straight pipe (2).  A  length  of  the core (3') for molding pipe is longer than the tip (1'). The  space (5) between the inner and outer molds is injected  with  synthetic resin to form a pipe connection integral with  the  straight  pipe (2) inserted to the core (3').
Patent KR-910006738-B1 (KR)
Inventor: TAKUMA KEISKE
IPC: G03G9/09
Filed: 1989-02-24
Granted: 1991-09-02
Abstract: 내용 없음.
Patent KR-0142423-B1 (KR)
Inventor: ENGEBRETSON MAYNARD A
IPC: H04R25/02
Filed: 1989-03-23
Granted: 1998-07-01
Abstract: 내용 없음
Patent KR-940001606-B1 (KR)
Inventor: SUZUKI HISUKE
IPC: H01P3/08
Filed: 1989-03-31
Granted: 1994-02-25
Abstract: 내용 없음.