baber/WOPTO huggingface dataset:
Patent KR-910010068-B1 (KR)
Title: Level transfer circuit
Inventor: KIM YOUNG-HEE
IPC: H03G9/00
Filed: 1989-11-30
Granted: 1991-12-12
Abstract: The  level  translation  circuit  for  reducing  the  current flowing to a ground comprises a signal  translation  circuit  (30) connected between FETs (Q3) and (Q6), a first latch  circuit  (10) connected to a connection point of the FETs (Q1) and (Q2) and  for receiving a driving signal from  the  signal  translation  circuit (30) and a second latch circuit (20)  connected  to  a  connection point of the FETs (Q4) and (Q5) and for receiving a driving signal from the signal translation circuit (30).  The  first  and  second latch circuit (10,20) are driven alternatively in  response  to  a control signal (Vi). The FETs (Q3) and (Q6) are not driven at  the same time.
Patent KR-0147049-B1 (KR)
Inventor: DE JONG DURK JAN
IPC: G06T15/10
Filed: 1990-01-10
Granted: 1998-09-15
Abstract: 내용 없음
Patent KR-940001049-B1 (KR)
Inventor: WAKABAYASHI KAORU
IPC: H04N1/393
Filed: 1990-02-23
Granted: 1994-02-08
Abstract: 내용 없음.
Patent KR-930001900-B1 (KR)
Title: Manufacturing method of transistor
Inventor: KIM DAL-SU
IPC: H01L29/78
Filed: 1990-04-12
Granted: 1993-03-19
Abstract: The method for mfg. a  transistor  comprises  (a)  forming  a basic oxide film (8)  and  a  nitride  film  (7)  on  the  silicon substrate (4), (b) selectively lifting off the films (7,8) by  the active masking, and then forming a field oxide film  (1)  of  3000 angstroms thickness on the field region by the LOCOS process,  (c) lifting off the remaining films (7,8) on the  active  region,  (d) growing a gate oxide film (6), depositing  a  polysilicon  and  an oxide film (9), and then selectively lifting off the film (9)  and the polysilicon to form a gate (3) by the  masking  and  photoetch process, and (e) implanting a field ion into the lower side of the film (1).
Patent KR-950014837-B1 (KR)
Title: Optical informations recording medium & recording method
Inventor: HAMADA EMIKO
IPC: G11B7/2542
Filed: 1990-05-01
Granted: 1995-12-15
Abstract: An optical information recording medium comprising a light transmitting substrate, a light absorptive layer containing at least one light absorbing substance formed on the substrate and a light reflective layer made of a metal film formed on the light absorptive layer, wherein an optical parameter represented by  rho  = nabsdabs/ lambda  wherein nabs is the real part of the complex refractive index of the light absorptive layer, dabs is the average thickness of the light absorptive layer and  lambda  is the wavelength of a reading laser beam, is 0.6< rho <1.6.
Patent KR-950009951-B1 (KR)
Inventor: ZUZIMURA OSAMU
IPC: B23B29/00
Filed: 1990-05-21
Granted: 1995-09-04
Abstract: 내용 없음.
Patent KR-0142323-B1 (KR)
Title: Solids-fluid contacting apparatus with screen at fluid outlet
Inventor: MOORMAN CHARLES T
IPC: B01J8/20
Filed: 1990-06-19
Granted: 1998-06-01
Abstract: A screen (14) is mounted in an apparatus for contacting particulate solids with a fluid. The apparatus comprises an elongate column (10) for holding a bed of particulate solids for contact with a fluid, the column being designed to be oriented substantially vertically in use and having a fluid inlet (11) near the bottom for admitting a fluid into the column and a fluid outlet (13) near the top for permitting the fluid to exit the column after passing upwardly through a bed of particulate solids in the column. The purpose of the screen (14) is to screen solids from the fluid exiting the column through the fluid outlet (13). The screen (14) comprises a plurality of vertical screen wires (15), and the screen is located within the column such that all of the fluid passing through the column passes through the screen (14) and thence through the fluid outlet (13). Each pair of adjacent vertical screen wires (15) defines a substantially vertical screen slot (20) therebetween. The opening of each vertical screen slot (20) at the surface of the screen (14) which is upstream in the sense of a fluid flowing through the column (10), passing through the screen (14), and exiting through the outlet (13) during operation of the column (10), has a width suitable for screening solids from the exiting fluid and has a length which is substantially greater than its width.
Patent KR-0142227-B1 (KR)
Inventor: SMART DAVID CLINTON
IPC: G03C3/00
Filed: 1990-08-08
Granted: 1998-07-01
Abstract: 내용 없음.
Patent KR-930011581-B1 (KR)
Title: Anti-fouling paints
Inventor: LEE MUN-YONG
IPC: C09D5/14
Filed: 1990-09-21
Granted: 1993-12-13
Abstract: The  anti-pollution  coating  compsn.  is  prepd.  by  adding molybdenum disulphide (MoS2) to the copolymer comprising (A) 10-60 wt.% of one or more mixt. of formula (1), (B) 5-20 wt.% of one  or more mixt. of formula (2) and (C) 30-85 wt.% of one or more  mixt. of formula (3). In the formulas, X is H or methyl; n is 2-4, m  is 0-70, X' is H or methyl, y is 0-1, n'  is  0-4,  R  is  methyl  or ethyl, X" is H or methyl, R' is C1-20  alkyl.  Pref.  the  numeric average of molecula weight of the  copolymer  is  1,000-2,000,000, and molybdenum disulphide is added 10-600 wt. pts. w.r.t. 100  wt. pts. of the copolymer.
Patent KR-940004387-B1 (KR)
Inventor: IEKI TOSHIHARU
Filed: 1990-10-31
Granted: 1994-05-23
Abstract: 내용 없음.
Patent KR-930009590-B1 (KR)
Title: Method for manufacturing a lsi mos device with capacitor
Inventor: LEE UNG-SOK
IPC: H01L27/108
Filed: 1990-12-22
Granted: 1993-10-07
Abstract: The method for manufacturing a capacitor of  high  integrated MOS device for increasing capacitance is  disclosed.  The  process includes the steps of forming a gate,  source  and  drain  on  the substrate, forming a first oxide film and a nitride  film  on  the resultant, forming a buried contact on  the  source  or  drain  by etching first oxide film and nitride film selectively,  forming  a first  polysilicon  layer  on  the  resultant,  patterning   first polysilicon layer to form a storage node pattern, forming a second oxide film on the resultant, removing the portion  of  the  second oxide film formed on the first polysilicon layer, forming a second polysilicon layer on the resultant, forming masks on  the  portion of the second polysilicon  layer  formed  on  both  sides  of  the storage node region, forming a storage node by over etching second polysilicon  layer,  removing  second  oxide   film,   forming   a dielectric layer and plate electrode.
Patent KR-970009146-B1 (KR)
Title: Day-night rear view mirror
Inventor: BRANDT TAYLOR G
IPC: B60R1/04
Filed: 1990-01-10
Granted: 1997-06-07
Abstract: A day-night mirror assembly for a motor vehicle having a housing with a front opening, a first sheet of transparent material at the opening and second sheet which is located behind the first sheet and which has a first light reflective surface which faces the opening. A third sheet having a second light reflecting surface which differs in light reflectivity from the first light reflective surface is located within the housing for movement between an inactive position to an active position in which the third sheet is located between the first and second sheets and a second light reflective surface faces the opening in the housing. The third sheet is selectively positioned in either the active position or the inactive position by means of an actuator which is manually operated from outside of the housing.
Patent KR-950012034-B1 (KR)
Inventor: YOSHIDA TORU
IPC: H01L27/10
Filed: 1991-01-18
Granted: 1995-10-13
Abstract: 내용 없음.
Patent KR-930003536-B1 (KR)
Title: Metal mold device of piercing
Inventor: HAN HO-BYONG
IPC: B21D31/02
Filed: 1991-05-20
Granted: 1993-05-03
Abstract: The device consists of an upper plate  (11)  attached  to  an upper holder (10), a punch holder (15) with a guide bush  (14),  a punch member (17) and a punch  guide  pin  (16),  a  stripper  (9) guiding the punch member for the workpiece to be easily pierced, a lower plate (21) attached to a lower holder  (20),  a  guide  post (22) attached to the upper of the lower plate to guide  the  punch holder when the upper holder descends, a die  (23)  fixed  to  the center of the lower plate to pierce the workpiece when  the  upper holder descends.  The  apparatus  includes  a  cam  member   (12) reciprocating with  the  upper  holder,  a  sprocket  member  (30) contacted with the end of the cam member, a rotating  member  (34) fixed  to  the  upper  of  the  sprocket  member  to  support  the workpiece, supporting member, and a fixing member for  fixing  the workpiece.
Patent KR-950010931-B1 (KR)
Title: Communication processing method for large capacity
Inventor: SOL HONG-SU
IPC: H04L69/14
Filed: 1991-05-23
Granted: 1995-09-25
Abstract: The device provides real time bulk message transmitting method for the multi-node system using local area network(LAN). The method comprises the steps of: initialing the system and executing the operation command of the LANCE(103); dividing the bulk message into packet when message transmission request is activated by the MPU(100); endowing a serial number to the packeted message; transmitting the packeted message sequentially to external LAN; constructing the packeted message into bulk message by constructing the received packet in numerical order; and storing the reconstructed message into common memory(106).
Patent KR-100248932-B1 (KR)
Title: Magneto-optical disc
Inventor: OOMORI TAKASHI
IPC: G11B7/24
Filed: 1991-06-28
Granted: 2000-03-15
Abstract: A magneto-optical disc recording and/or reproducing system comprising a magneto-optical disc (D) having a transparent base plate (1), a magneto-optical recording layer (2) formed on the surface (1b) opposite of the light beam incident surface (1a) of the transparent base plate (1); an optical head (38; 112) for radiating a light beam on said magneto-optical recording layer (2); a magnetic head (42; 111) for supplying a magnetic field to said magneto-optical disc (D) arranged in the opposite side of said optical head (38; 112), wherein said magneto-optical disc (D) has a layer (5; 25) having excellent lubricity which is formed on said surface (1b) opposite of the light beam incident surface (1a) of said transparent base plate (1) in superimposition on said magneto-optical recording layer (2), said magnetic head (42; 111) is connected and moved on said layer (5; 25), wherein said magneto-optical disc (D) is contained in a cartridge (117) having an opening, said opening being formed on a surface of said cartridge (117); said optical head (38; 112) is radiating the light beam on said magneto-optical recording recording layer (2) through said cartridge (117); said magnetic head (42; 111) is supplying a magnetic field to said magneto-optical disc (D) through the opening of said cartridge (117). <IMAGE>
Patent KR-940001123-B1 (KR)
Inventor: CHON SONG-BU
IPC: H01L21/76
Filed: 1991-07-11
Granted: 1994-02-14
Abstract: 내용 없음.
Patent KR-940005730-B1 (KR)
Title: Method of making semiconductor device
Inventor: HAN MIN-SOK
IPC: H01L27/108
Filed: 1991-07-20
Granted: 1994-06-23
Abstract: The method for semiconductor device increases an area of capacitor in order not to inflate a volume of device. The method has an advantage of easing a post-process by reduction of perpendicular distance and maximizing a capacitor by removal of oxidation layer. The method includes: a process which sequentially forms a gate oxidation layer, a gate electrode, and a 1st oxidation layer between semiconductor board and field oxidation layer; a process whcih sequentially forms a 2nd oxidation layer, a nitrogen layer and a 3rd oxidation layer; a process which forms a contact unit of storage electric conduction layer, a process which forms a storage electrode; and a process which forms a plate electrode.
Patent KR-0183028-B1 (KR)
Title: Benzimidazole derivatives, their preparation and their application as medicaments
Inventor: CUBERES-ALTISENT MARIA ROSA
IPC: A61K31/495
Filed: 1991-07-23
Granted: 1999-05-01
Abstract: The invention relates to new compounds derived from benzimidazole, characterised in that they correspond to the general formula I, and to their therapeutically acceptable salts, 
<IMAGE>
 in which: 
 
  - R1 and R2, which may be the same or different, represent a hydrogen atom, a halogen, a lower alkyl radical, a hydroxyl radical, an alkoxy radical, an alkyl carboxylate radical, an aryl or substituted aryl radical, 
  - n can have the values 0 or 1, 
  - m can have the values 2 to 4, 
  - X, Y, Z and W, which may be the same or different, and even forming part of another aromatic or non-aromatic ring, represent a nitrogen atom or a carbon atom linked to a hydrogen atom, a halogen or to another alkyl, aryl, carboxyalkyl, carboxyl, hydroxyl, alkylhydroxy, sulphonic and alkylsulphonic radical. 
 
<??>The invention also relates to the process for preparing the compounds and to their use for the manufacture of medicaments intended for the prophylaxis and treatment of various histamine-induced allergic diseases.
Patent KR-940001912-B1 (KR)
Title: Termal electric cell structure of fusing carbonate
Inventor: PARK SANG-KIL
IPC: H01M8/14
Filed: 1991-08-12
Granted: 1994-03-11
Abstract: The fuel cell structure has no need to install a sliding gasket and a separate current collector or hinge for the current collector. Manifold casings (19,19A) each comprises an anode casing (6), a cathode casing (7), and a separator plate (10). Electrodes (1,2) are installed on the manifold casing to combine with electrolyte matrix (3) to form a unit cell. Electrolyte pumping is omitted by stacking the unit cells. The fuel cell structure has simplified the pressurizing apparatus for sealing off the leakage of fuel and oxidizing gas.
Patent KR-0182309-B1 (KR)
Title: Textile base material, in woven or weft knittd fabric, for thermobinding interlining
Inventor: GROSHENS PIERRE
IPC: D06M17/00
Filed: 1991-10-11
Granted: 1999-05-01
Abstract: The textile support for fusible interlining consists of a woven fabric or of a woven-mesh knitted fabric. According to the invention, at least the weft of the woven or weft-knitted fabric is made from synthetic yarns, for example of 35 to 500 dtex composed of fine filaments of less than 1.3 dtex. These weft yarns are preferably textured. 
<??>The fusible interlining consists of the above-mentioned woven or weft-knitted fabric, on one face of which spots of heat-fusible polymer have been deposited.
Patent KR-940007912-B1 (KR)
Title: Telephone line state checking method of handler
Inventor: KIM SOK-CHAN
IPC: H04M11/00
Filed: 1991-11-29
Granted: 1994-08-27
Abstract: The method provides an effect of protection by insertion of telephone terminals in a terminal device without open-closure of the terminal device cover. The method includes a terminal device (10) which outputs correction value to an exchange interface, a handler (20) which reads meter value and states by specific lines (L1)(L2), and a telephone line code (40) which connects a terminal (10) to a handler (20). The handler (20) includes a signal detection unit (21) which detects a loop signal according to a photo coupler (PT1), a hook state detection unit (22) which determines hook states by a resistor (Rf) and an earth condenser (Ct), and a ring detection unit (23) which detects a ring signals according to a diode (D1), a capacitor (Cs) and a resistor (R5).
Patent KR-940007991-B1 (KR)
Title: Vertical dynamic focus circuit
Inventor: CHOE JONG-RYONG
IPC: H04N3/26
Filed: 1991-12-20
Granted: 1994-08-31
Abstract: The frequency discriminating vertical dynamic focusing circuit includes a parabolic waveform generator for receiving the output signal of a vertical outputting portion and generating a parabolic waveform, an inversion amplifier for invertedly amplifying the vertical dynamic focusing waveform of a vertical focusing portion, a vertical frequency/voltage converter for converting the frequency of the vertical sync signal to a voltage, a comparator for comparing the output voltage with other set voltages, and an analog switch for operating variable resistors to make uniform the output voltage of the amplifier, thereby enhancing quality of picture.
Patent KR-100215102-B1 (KR)
Inventor: KIM JIN-WOONG
IPC: C07D401/04
Filed: 1991-12-28
Granted: 1999-08-16
Abstract: 본 발명은 개량된 향균 활성을 갖는 다음 일반식(I)의 신규 퀴놀론 카르본산 화합물에 관한 것이다. 
     
       
     
     여기서 X= -H, -NH 2 , -CH 3 등이다. 
     상기 화합물들은 종래의 공지된 유사구조의 퀴놀론계 화합물에 비해 그람음성균 뿐만 아니라 그람 양성균 및 MRSA 균에도 유효하다.
Patent KR-950010560-B1 (KR)
Title: Apparatus for testing the polarity of a coil
Inventor: KANG CHANG-SHIK
IPC: G01R33/02
Filed: 1991-12-30
Granted: 1995-09-19
Abstract: The device for checking the polarity of magnetic field generating coil is characterized in that a compass is placed against a magnetic field leakage preventing coil attached to a deflection yoke, an input terminal of a horizontal coil is connected to the + terminal of an X terminal of an oscilloscope via a switch, an output terminal of the horizontal coil is connected to the - terminal of an X terminal of the oscilloscope via the magnetic field leakage preventing coil, the vertical coil of the deflection yoke is connected to the + and - terminals of the Y terminal of the oscilloscope, the + and- terminals of the X terminal of the oscilloscope are respectively connected to the + and - terminals of an oscillator, and a diode is connected in parallel to the switch.
Patent KR-100186872-B1 (KR)
Title: Stain elimination in consecutive color toning
Inventor: SWIDER RONALD
IPC: G03G9/13
Filed: 1990-05-09
Granted: 1999-05-01
Abstract: Toner and liquid developer compositions for use in color electrophotographic processes are described. The developer compositions display high particle-mediated conductivity and charge and thus give rise to a final print of exceptionally high quality. Methods of manufacturing the toner and developer compositions are also disclosed, as are novel charge control agents and processes for using the various compounds and compositions in consecutive multicolor image development.
Patent KR-100196672-B1 (KR)
Inventor: HARAKUCHI TAKASHI
IPC: B65G19/14
Filed: 1992-02-24
Granted: 1999-06-15
Abstract: 본 발명은 파이프 컨베이어의 파이프라인 계통로에 있어서 변각하는 코너부의 이것을 통과하는 순환반송수단과의 마찰의 경감을 도모한 파이프 컨베이어에 관한 것이다. 
     파이프라인 계통로중, 엘보우관 또는 벤드관의 코너부 내벽의 안쪽 절곡부분에 바깥쪽을 향하여 확대하는 부착케이스부를 설치하고, 이 부착케이스부내에, 둘레면이 상기 파이프라인의 내경에 꼭 맞는 원호형상 오목면을 이룬 북형상의 코너롤러를 상기 절곡부분의 파이프라인 내경을 확보하면서 회전이 자유롭게 설치하고, 종래의 미끄럼마찰로부터 구르는 마찰로 바꾸었으므로, 코너부에서의 체인의 원활한 주행이 가능하게 된다. 
     또, 둘레면이 상기 파이프라인의 내경에 꼭 맞는 원호형상 오목면을 이루는 절두원추체로 이루어지는 코너롤러를, 그 내경부를 아래로 하고 경사지게 하여서 회전축 하부가 상기 코너 부의 파이프바닥면보다 높아지는 것 같은 상태로 하여서 회전이 자유롭게 배설하면, 코너롤러의 축받이에 반송물이 침입하기 어려워진다. 
     또한, 코너롤러의 바깥둘레에 선형 융기부를 형성하면, 체인을 구성하는 계란형 링크가 선형 융기부와 맞붙어서, 체인의 움직임에 의해 코너롤러를 공회전시키는 일 없이 확실하게 회전시킬 수 있다.
Patent KR-950013363-B1 (KR)
Title: Styrenic thermoplastic resin composition with antistatic properties
Inventor: KIM HYONG-SU
IPC: C08L33/08
Filed: 1992-02-28
Granted: 1995-11-02
Abstract: The styrene based thermoplastic resin is composed of 2-25 wt% amide based elastomer, 60-93 wt% styrene based resin, and 2-15 wt% modified vinyl-based grafted copolymer, which is composed of main chain(a) and branch component(b). The main chain(a) is a copolymer of olefin-based monomer(eg. ethylene, poypylene, etc.) and a monomer containing carboxyl group(ex. ester methacrylate such as ester methylmethacrylate, butylmethacrylate, butylacrylate, etc., and alpha-, beta-unsaturated carbonate or anhydride such as vinyl acetate, maleic acid and maleic acid anhydride). The branch component(b) is a copolymer of a aromatic vinyl-based monomer(ex. styrene, alpha-methylstyrene, styrene hallogenide, etc.) and a vinyl cyanide-based monomer (eg. acrylonitrile, methacrylonitrile, etc.). The obtained resin has permanent antistatics and high shock strength.
Patent KR-950003360-B1 (KR)
Title: Universal chuck for machine tools
Inventor: PARK KUK-SANG
IPC: B23Q3/12
Filed: 1992-03-27
Granted: 1995-04-12
Abstract: The universal chuck mounted on the machine toos such as a milling cutter or on endmill, enables to change the tool position at various angles for performing various kinds of machining efficiently. The universal chuck comprises a stationary casing body (1) having a disk (4) connected with a rotary shaft; a movable casing body (8) connected with the body (1); bolt and nut (6)(6') for clamping the body (1) with the disk (4); bevel gears (15,15',16,16') for transmitting power to the connecting shaft (14) and a tool driving shaft (17); a guide block (11') slided at the guide groove (10); a clamping bolt (11) and nut (11') at the guide block for adjusting the slanted angle; a tube (18) for inserting the tool (20).
Patent KR-950003033-B1 (KR)
Title: Apparatus and method for separating luma/chroma signal
Inventor: LEE MYONG-HWAN
IPC: H04N9/77
Filed: 1992-04-16
Granted: 1995-03-29
Abstract: The method comprises the steps of, when the three color signal is received, generating chrominance signal and luminance signal corresponding to it; and generating a composite video signal by mixing the luminance signal and chrominance signal, the luminance signal and chrominance signal having different frequency band from each other in the composite video signal, thereby definitely dividing the luminance signal and chrominance signal.
Patent KR-0125093-B1 (KR)
Title: Heater arrangement for aluminium refining system
Inventor: PELTON JOHN F
IPC: F27D99/00
Filed: 1992-04-24
Granted: 1997-12-26
Abstract: A support plate, together with the shell of an aluminum holding and/or refining vessel, in combination with a refractory sheet positioned on the inner wall of a graphite block in which a heating element assembly is positioned, is used to hold and seal the heating assembly against exposure to air, without the need for enclosing the heating elements in a metal heating element container. <IMAGE>
Patent KR-0140188-B1 (KR)
Inventor: CHOE KWANG-MOON
IPC: G11B19/20
Filed: 1992-06-08
Granted: 1998-07-15
Abstract: 본 고안은 비교적 사이즈가 큰 LDP(레이져 디스크 플레이어)에서 구동및 정지간에 슬립(미끄럼)이 발생하지 않도록 하는 LDP의 디스크 슬립 방지 장치에 관한 것으로 상부클램퍼(1)의 중앙으로 클램퍼 돌기(2)와 가이드(5)의 가이드홈(6)이 결합되어 상부클램퍼(1)와 턴테이블(9)간의 슬립이 방지되도록 하되 클램퍼 돌기(2)는 삼각형 형상을 갖으며, 가이드홈(6)은 돌기부(6a)에 의해 요철을 주어 클램퍼 돌기(2)와 갑합되도록 구성시켜 디스크의 구동 및 정지시 슬립을 방지하여 정지시간을 줄이고 가이드면의 손상을 방지하여 디스크의 편심회전을 막고 화질및 각종 성능 저하 요인을 제거시킨다.
Patent KR-950006146-B1 (KR)
Title: Apparatus for injecting controlled pumping amount per unit time by the selected injection mode
Inventor: PARK CHANG-JAE
IPC: A61M5/172
Filed: 1992-08-06
Granted: 1995-06-09
Abstract: The apparatus includes a setter (4) setting the drop number per 1 cc of IV injection liquid by selecting the injection mode, a setter (5) setting the injection quantity per hour if the volumetric mode is selected, a setter (6) setting the drop number per minute if the drop mode is selected, a setter (7) setting the injection start time, a swtch (8) starting the injection, an one chip microprocessor (13) determining the unit times and controlling a motor (18) pumping the injection liquid by comparing the present quantity with the preset value, a display (16) displaying the compared result, and an alarm (19) warning the abnormal compared result.
Patent KR-950014258-B1 (KR)
Title: Current sense amp circuit with presetting circuit
Inventor: JUNG CHOL-MIN
IPC: G11C11/41
Filed: 1992-10-08
Granted: 1995-11-23
Abstract: an equalization unit for equalizing a voltage of a pair of data lines in response to a first signal transmitted during a first operation; and a pre-charging unit for pre-charging the pair of data lines to a constant voltage during a second operation by having first and second transistors whose channels are connected between the pair of data lines and the power voltage, in response to a second signal, and third and fourth transistors whose channels are connected between the pair of data lines and the power voltage, in response to a third signal.
Patent KR-960016154-B1 (KR)
Inventor: SARKISSIAN VICKEN R
IPC: B23K9/32
Filed: 1992-10-30
Granted: 1996-12-04
Abstract: 내용 없음