loadpatents
Patent applications and USPTO patent grants for Yamamoto; Hideki.The latest application filed is for "air circulator".
Patent | Date |
---|---|
Blower Grant 11,401,949 - Fukumasu , et al. August 2, 2 | 2022-08-02 |
Air circulator Grant 11,402,120 - Yamamoto , et al. August 2, 2 | 2022-08-02 |
Magnetic material and magnetic element Grant 11,393,618 - Wakabayashi , et al. July 19, 2 | 2022-07-19 |
Air Circulator App 20220146143 - YAMAMOTO; Hideki ;   et al. | 2022-05-12 |
Air circulator Grant 11,268,735 - Yamamoto , et al. March 8, 2 | 2022-03-08 |
Blower App 20210348623 - FUKUMASU; Kazuhito ;   et al. | 2021-11-11 |
Mass Spectrometry Device And Mass Spectrometry Method App 20210305034 - FUJIMOTO; Minoru ;   et al. | 2021-09-30 |
CHA-type titanosilicate separation membrane and production method therefor and gas separation method Grant 11,117,102 - Imasaka , et al. September 14, 2 | 2021-09-14 |
Mass spectrometer, mass spectrometry method, and mass spectrometry program Grant 11,094,516 - Yamamoto , et al. August 17, 2 | 2021-08-17 |
Dryer Grant D927,099 - Abe , et al. August 3, 2 | 2021-08-03 |
Zeolite Separation Membrane And Production Method Therefor App 20210220779 - Imasaka; Satoshi ;   et al. | 2021-07-22 |
Zeolite separation membrane and production method therefor Grant 10,994,246 - Imasaka , et al. May 4, 2 | 2021-05-04 |
Air Circulator App 20210041132 - YAMAMOTO; Hideki ;   et al. | 2021-02-11 |
Tandem mass spectrometer Grant 10,890,562 - Yamamoto , et al. January 12, 2 | 2021-01-12 |
Air circulator Grant 10,859,287 - Yamamoto , et al. December 8, 2 | 2020-12-08 |
Accumulator Grant 10,851,804 - Yamamoto , et al. December 1, 2 | 2020-12-01 |
Magnetic Material and Magnetic Element App 20200357555 - Wakabayashi; Yuki ;   et al. | 2020-11-12 |
Tandem mass spectrometer and program for the same Grant 10,741,372 - Toyama , et al. A | 2020-08-11 |
Mass spectrometer Grant 10,739,320 - Yamamoto , et al. A | 2020-08-11 |
Pallet Grant 10,710,768 - Tsukada , et al. | 2020-07-14 |
Air Circulator App 20200208871 - YAMAMOTO; Hideki ;   et al. | 2020-07-02 |
Mass Spectrometer, Mass Spectrometry Method, And Mass Spectrometry Program App 20200152434 - YAMAMOTO; Hideki ;   et al. | 2020-05-14 |
Mass spectrometer Grant 10,613,062 - Yamamoto , et al. | 2020-04-07 |
Tandem Mass Spectrometer And Program For The Same App 20200013599 - TOYAMA; Atsuhiko ;   et al. | 2020-01-09 |
Mass Spectrometer App 20200003739 - YAMAMOTO; Hideki ;   et al. | 2020-01-02 |
Cha-type Titanosilicate Separation Membrane And Production Method Therefor And Gas Separation Method App 20190275474 - IMASAKA; Satoshi ;   et al. | 2019-09-12 |
Zeolite Separation Membrane And Production Method Therefor App 20190224630 - IMASAKA; Satoshi ;   et al. | 2019-07-25 |
Chromatograph mass spectrometer Grant 10,324,071 - Yamamoto , et al. | 2019-06-18 |
Paper sheet processing device, paper sheet processing system, and paper sheet processing method Grant 10,286,422 - Takahama , et al. | 2019-05-14 |
Liquid jetting apparatus Grant 10,226,936 - Yamamoto | 2019-03-12 |
Pallet App 20190055054 - TSUKADA; Shigeru ;   et al. | 2019-02-21 |
Liquid jetting apparatus Grant 10,179,460 - Yamamoto Ja | 2019-01-15 |
Mass Spectrometer App 20180313794 - YAMAMOTO; Yoshitake ;   et al. | 2018-11-01 |
Water filter device Grant 10,105,004 - Salas-de la Cruz , et al. October 23, 2 | 2018-10-23 |
Tandem Mass Spectrometer App 20180284065 - YAMAMOTO; Hideki ;   et al. | 2018-10-04 |
Accumulator App 20180245606 - YAMAMOTO; Hideki ;   et al. | 2018-08-30 |
Conveyor and tray unit Grant 9,975,714 - Hirata , et al. May 22, 2 | 2018-05-22 |
Liquid Jetting Apparatus App 20180093478 - YAMAMOTO; Hideki | 2018-04-05 |
Liquid Jetting Apparatus App 20180093512 - YAMAMOTO; Hideki | 2018-04-05 |
Conveying apparatus and tray unit Grant 9,896,296 - Chikamoto , et al. February 20, 2 | 2018-02-20 |
Chromatograph Mass Spectrometer App 20170328874 - YAMAMOTO; Hideki ;   et al. | 2017-11-16 |
Paper Sheet Processing Device, Paper Sheet Processing System, And Paper Sheet Processing Method App 20170304870 - TAKAHAMA; Tomohisa ;   et al. | 2017-10-26 |
Conveying Apparatus And Tray Unit App 20170283202 - CHIKAMOTO; Tadanobu ;   et al. | 2017-10-05 |
Conveyor And Tray Unit App 20170283199 - HIRATA; Kenichi ;   et al. | 2017-10-05 |
Transmission message generating device and vehicle-mounted communication system Grant 9,614,767 - Horihata , et al. April 4, 2 | 2017-04-04 |
Process for producing material for food or beverage Grant 9,603,375 - Yamamoto , et al. March 28, 2 | 2017-03-28 |
Solid titanium catalyst component for ethylene polymerization, ethylene polymerization catalyst and ethylene polymerization method Grant 9,593,175 - Matsunaga , et al. March 14, 2 | 2017-03-14 |
Analyzing system and control method thereof Grant 9,435,777 - Yamamoto September 6, 2 | 2016-09-06 |
Lawn Growth-promoting Agent And Method Of Using Same App 20160029629 - OHTAKE; Hirohisa ;   et al. | 2016-02-04 |
Water Filter Device App 20150374169 - Salas-de la Cruz; David ;   et al. | 2015-12-31 |
Tandem quadrupole mass spectrometer Grant 9,142,394 - Yamamoto September 22, 2 | 2015-09-22 |
Projection display device Grant 9,075,296 - Watanabe , et al. July 7, 2 | 2015-07-07 |
Tandem Quadrupole Mass Spectrometer App 20150102219 - YAMAMOTO; Hideki | 2015-04-16 |
Channel selective information transmitting device, channel selective information transmitting method and its program, and memory medium Grant 8,943,524 - Yamamoto , et al. January 27, 2 | 2015-01-27 |
Process For Producing Material For Food Or Beverage App 20150010689 - YAMAMOTO; Hideki ;   et al. | 2015-01-08 |
Paper Sheet Handling Machine And Paper Sheet Handling Method App 20150003718 - YAMAMOTO; Hideki ;   et al. | 2015-01-01 |
Transmission Message Generating Device And Vehicle-mounted Communication System App 20140334300 - Horihata; Satoshi ;   et al. | 2014-11-13 |
Paper sheet handling machine and paper sheet handling method Grant 8,851,472 - Yamamoto , et al. October 7, 2 | 2014-10-07 |
Relay device, communication system and communication method Grant 8,832,053 - Yamamoto September 9, 2 | 2014-09-09 |
Optical device and projection device using the optical device which reduce registration shift caused by heat Grant 8,814,365 - Iwane , et al. August 26, 2 | 2014-08-26 |
Analyzing System And Control Method Thereof App 20140157875 - YAMAMOTO; Hideki | 2014-06-12 |
Lead-free Brass Alloy For Hot Working App 20140112821 - Yamamoto; Hideki ;   et al. | 2014-04-24 |
Image recording apparatus Grant 8,696,085 - Yamamoto April 15, 2 | 2014-04-15 |
Packaging box Grant 8,662,303 - Yoshida , et al. March 4, 2 | 2014-03-04 |
Polymerizable composition, and resin and optical part using the same Grant 8,637,633 - Nakamura , et al. January 28, 2 | 2014-01-28 |
Projection image display apparatus and projection optical system Grant 8,602,563 - Nishikawa , et al. December 10, 2 | 2013-12-10 |
Hydraulic booster and hydraulic brake system using the same Grant 8,534,773 - Honda , et al. September 17, 2 | 2013-09-17 |
Image recording apparatus Grant 8,523,348 - Yamamoto , et al. September 3, 2 | 2013-09-03 |
Hydraulic brake apparatus Grant 8,523,293 - Suzuki , et al. September 3, 2 | 2013-09-03 |
Projection Display Device App 20130201457 - Watanabe; Toshiyuki ;   et al. | 2013-08-08 |
Hydraulic Booster And Hydraulic Brake System Using The Same App 20130175851 - Honda; Tetsuya ;   et al. | 2013-07-11 |
Communication system adapting for car, communication apparatus adapting for car, and communication method adapting for car Grant 8,448,035 - Yamamoto , et al. May 21, 2 | 2013-05-21 |
Solid titanium catalyst component for ethylene polymerization, ethylene polymerization catalyst and ethylene polymerization method Grant 8,383,541 - Matsunaga , et al. February 26, 2 | 2013-02-26 |
Polymerizable Composition, and Resin and Optical Part Using the Same App 20130005934 - Nakamura; Mitsuo ;   et al. | 2013-01-03 |
Paper Sheet Handling Machine And Paper Sheet Handling Method App 20120313316 - YAMAMOTO; Hideki ;   et al. | 2012-12-13 |
Projection display apparatus Grant 8,330,879 - Iwai , et al. December 11, 2 | 2012-12-11 |
Ink-jet recording apparatus Grant 8,277,041 - Yamamoto October 2, 2 | 2012-10-02 |
Inkjet recording apparatus Grant 8,186,826 - Sakano , et al. May 29, 2 | 2012-05-29 |
Inkjet recording apparatus Grant 8,182,081 - Yamamoto , et al. May 22, 2 | 2012-05-22 |
Projection type video display apparatus Grant 8,162,490 - Onishi , et al. April 24, 2 | 2012-04-24 |
Method for managing light exposure mask and light exposure mask Grant 8,158,311 - Shimada , et al. April 17, 2 | 2012-04-17 |
Packaging Box App 20120085678 - YOSHIDA; Takaaki ;   et al. | 2012-04-12 |
Wave Plate And Polarization Conversion Element, Illumination Optical System, And Image Display Device That Use Wave Plate App 20120081622 - Horikoshi; Ryoko ;   et al. | 2012-04-05 |
Recording apparatus Grant 8,109,507 - Okumura , et al. February 7, 2 | 2012-02-07 |
Image Recording Apparatus App 20120001992 - YAMAMOTO; Hideki ;   et al. | 2012-01-05 |
Optical Device And Projection Device App 20110292353 - Iwane; Tetsuaki ;   et al. | 2011-12-01 |
Recording device and recording medium conveying method Grant 8,052,246 - Yamamoto November 8, 2 | 2011-11-08 |
Solid Titanium Catalyst Component For Ethylene Polymerization, Ethylene Polymerization Catalyst And Ethylene Polymerization Method App 20110269924 - MATSUNAGA; Kazuhisa ;   et al. | 2011-11-03 |
Ink-jet Recording Apparatus App 20110102530 - Yamamoto; Hideki | 2011-05-05 |
Image processing apparatus Grant 7,911,658 - Yamamoto March 22, 2 | 2011-03-22 |
Solid Titanium Catalyst Component For Ethylene Polymerization, Ethylene Polymerization Catalyst And Ethylene Polymerization Method App 20110034648 - Matsunaga; Kazuhisa ;   et al. | 2011-02-10 |
Polymerizable Composition, And Resin And Optical Part Using The Same App 20100298519 - Nakamura; Mitsuo ;   et al. | 2010-11-25 |
Relay Device, Communication System And Communication Method App 20100281010 - Yamamoto; Hideki | 2010-11-04 |
Recording Apparatus App 20100237554 - Okumura; Masayuki ;   et al. | 2010-09-23 |
Projection Display Apparatus App 20100195006 - Iwai; Junichi ;   et al. | 2010-08-05 |
Projection image display apparatus and projection optical system App 20100182571 - Nishikawa; Jun ;   et al. | 2010-07-22 |
Ink ribbon cartridge with first and second grip portions Grant 7,758,262 - Yamamoto , et al. July 20, 2 | 2010-07-20 |
Ink ribbon cartridge with take-up shaft resistance means Grant 7,736,077 - Yamamoto June 15, 2 | 2010-06-15 |
Communication System Adapting For Car, Communication Apparatus Adapting For Car, And Communication Method Adapting For Car App 20100131816 - Yamamoto; Hideki ;   et al. | 2010-05-27 |
Channel Selective Information Transmitting Device, Channel Selective Information Transmitting Method And Its Program, And Memory Medium App 20100083297 - Yamamoto; Hideki ;   et al. | 2010-04-01 |
Structure for mounting backup battery Grant 7,638,232 - Yamamoto December 29, 2 | 2009-12-29 |
Inkjet Recording Apparatus App 20090244247 - Yamamoto; Hideki ;   et al. | 2009-10-01 |
Inkjet Recording Apparatus App 20090219333 - SAKANO; Yuji ;   et al. | 2009-09-03 |
Image Recording Apparatus App 20090141314 - Yamamoto; Hideki | 2009-06-04 |
Recording Device and Recording Medium Conveying Method App 20090141070 - Yamamoto; Hideki | 2009-06-04 |
Horizontal register transfer pulse generation circuit and imaging apparatus Grant 7,518,648 - Tagami , et al. April 14, 2 | 2009-04-14 |
Projection type video display Grant 7,506,986 - Koba , et al. March 24, 2 | 2009-03-24 |
Hydraulic Brake Apparatus App 20090058181 - SUZUKI; Atsushi ;   et al. | 2009-03-05 |
Ink sheet cartridge Grant 7,450,141 - Yamamoto November 11, 2 | 2008-11-11 |
Ink ribbon cartridge App 20080187385 - Yamamoto; Hideki | 2008-08-07 |
Ink ribbon cartridge having shaft connecting members Grant 7,367,728 - Yamamoto May 6, 2 | 2008-05-06 |
Method For Managing Light Exposure Mask And Light Exposure Mask App 20080102381 - Shimada; Shu ;   et al. | 2008-05-01 |
Open/closed state detecting system Grant 7,329,820 - Yamamoto February 12, 2 | 2008-02-12 |
Ink ribbon cartridge Grant 7,258,501 - Yamamoto August 21, 2 | 2007-08-21 |
Ink ribbon cartridge Grant D545,883 - Yamamoto , et al. July 3, 2 | 2007-07-03 |
Gear changing device and communication apparatus including the same Grant 7,227,672 - Isozaki , et al. June 5, 2 | 2007-06-05 |
Ink ribbon cartridge Grant 7,213,990 - Yamamoto May 8, 2 | 2007-05-08 |
Method and system for selling content Grant 7,206,749 - Yamamoto , et al. April 17, 2 | 2007-04-17 |
Projector and phase difference plate and method of arranging phase difference plate Grant 7,199,849 - Iwai , et al. April 3, 2 | 2007-04-03 |
Open/closed state detecting system App 20070047009 - Yamamoto; Hideki | 2007-03-01 |
Image processing apparatus App 20070047027 - Yamamoto; Hideki | 2007-03-01 |
Projection type video display apparatus App 20060290825 - Onishi; Yasuo ;   et al. | 2006-12-28 |
Ink ribbon cartridge Grant D533,895 - Yamamoto , et al. December 19, 2 | 2006-12-19 |
Ink ribbon cartridge Grant D532,441 - Yamamoto , et al. November 21, 2 | 2006-11-21 |
Ink ribbon cartridge Grant D532,442 - Yamamoto , et al. November 21, 2 | 2006-11-21 |
Ink ribbon cartridge Grant D531,657 - Yamamoto , et al. November 7, 2 | 2006-11-07 |
Horizontal Register Transfer Pulse Generation Circuit And Imaging Apparatus App 20060244856 - Tagami; Hiroyasu ;   et al. | 2006-11-02 |
Prism, projection and optical component Grant 7,130,120 - Katsumata , et al. October 31, 2 | 2006-10-31 |
Ink sheet cartridge App 20060139437 - Yamamoto; Hideki | 2006-06-29 |
System and method for distributing digital content Grant 6,978,020 - Taniguchi , et al. December 20, 2 | 2005-12-20 |
Performance analysis program and method for generating the same App 20050278145 - Yamamoto, Hideki | 2005-12-15 |
Multi-functional device having vertically arranged scanner and printer sections Grant 6,961,152 - Watanabe , et al. November 1, 2 | 2005-11-01 |
Projection type video display App 20050231962 - Koba, Hiroki ;   et al. | 2005-10-20 |
Ink ribbon cartridge App 20050201805 - Yamamoto, Hideki | 2005-09-15 |
Ink ribbon cartridge App 20050201806 - Yamamoto, Hideki | 2005-09-15 |
Ink ribbon cartridge App 20050201804 - Yamamoto, Hideki | 2005-09-15 |
Ink ribbon cartridge App 20050201803 - Yamamoto, Hideki ;   et al. | 2005-09-15 |
Ink ribbon cartridge App 20050201802 - Yamamoto, Hideki | 2005-09-15 |
Illuminating optical system, image display unit and method of illuminating space modulation element Grant 6,921,176 - Tomita , et al. July 26, 2 | 2005-07-26 |
Sumo inhibitors App 20050158808 - Kikuchi, Akira ;   et al. | 2005-07-21 |
Insulating sheet and electronic apparatus using the same Grant 6,875,925 - Yamamoto April 5, 2 | 2005-04-05 |
Prism, projection and optical component App 20050063060 - Katsumata, Masao ;   et al. | 2005-03-24 |
Glass plate with oxide film and process for producing same Grant 6,866,937 - Honjo , et al. March 15, 2 | 2005-03-15 |
Projector and phase difference plate and method of arranging phase difference plate App 20050007503 - Iwai, Junichi ;   et al. | 2005-01-13 |
Prism, projection device and optical component Grant 6,829,090 - Katsumata , et al. December 7, 2 | 2004-12-07 |
Structure for mounting backup battery App 20040209157 - Yamamoto, Hideki | 2004-10-21 |
Projection type video display device that prevents color nonuniformity Grant 6,803,971 - Yamamoto , et al. October 12, 2 | 2004-10-12 |
Illuminating optical system, image display unit and method of illuminating space modulation element App 20040196443 - Tomita, Hideo ;   et al. | 2004-10-07 |
Method for producing .beta.-titanium alloy wire Grant 6,800,153 - Ishii , et al. October 5, 2 | 2004-10-05 |
Article with antifogging film and process for producing the same Grant 6,800,365 - Yamazaki , et al. October 5, 2 | 2004-10-05 |
Projection-type display device Grant 6,783,241 - Miyawaki , et al. August 31, 2 | 2004-08-31 |
Insulating sheet and electronic apparatus using the same App 20040149487 - Yamamoto, Hideki | 2004-08-05 |
Coding process method and coding process device App 20030215094 - Sato, Masashi ;   et al. | 2003-11-20 |
Projection apparatus Grant 6,648,474 - Katsumata , et al. November 18, 2 | 2003-11-18 |
Water-repellent glass pane and method for producing same Grant 6,641,654 - Akamatsu , et al. November 4, 2 | 2003-11-04 |
Printing device App 20030184771 - Yamamoto, Hideki ;   et al. | 2003-10-02 |
Article with photocatalytic film Grant 6,582,839 - Yamamoto , et al. June 24, 2 | 2003-06-24 |
Prism, projection device and optical component App 20030081317 - Katsumata, Masao ;   et al. | 2003-05-01 |
Projection apparatus App 20030058411 - Katsumata, Masao ;   et al. | 2003-03-27 |
Article with antifogging film and process for producing same Grant 6,531,215 - Yamazaki , et al. March 11, 2 | 2003-03-11 |
Projection-type display device and method of adjustment thereof Grant 6,520,645 - Yamamoto , et al. February 18, 2 | 2003-02-18 |
Method for producing beta-titanium alloy wire App 20020174922 - Ishii, Naoki ;   et al. | 2002-11-28 |
Article with antifogging film and process for producing the same App 20020176983 - Yamazaki, Seiji ;   et al. | 2002-11-28 |
Projection-type display device App 20020122157 - Miyawaki, Tetsuyuki ;   et al. | 2002-09-05 |
Gear changing device and communication apparatus including the same App 20020118395 - Isozaki, Atsushi ;   et al. | 2002-08-29 |
Article with antifogging film and process for producing same Grant 6,420,020 - Yamazaki , et al. July 16, 2 | 2002-07-16 |
Water-repellent glass pane and method for producing same App 20020073733 - Akamatsu, Yoshinori ;   et al. | 2002-06-20 |
.beta.-titanium alloy wire, method for its production and medical instruments made by said .beta.-titanium alloy wire Grant 6,402,859 - Ishii , et al. June 11, 2 | 2002-06-11 |
Projection-type display device Grant 6,394,606 - Miyawaki , et al. May 28, 2 | 2002-05-28 |
Glass plate with oxide film and process for producing same App 20020051870 - Honjo, Hiroshi ;   et al. | 2002-05-02 |
Article with antifogging film and process for producing same App 20020037402 - Yamazaki, Seiji ;   et al. | 2002-03-28 |
Projection-type display device and method of adjustment thereof App 20020033932 - Yamamoto, Hideki ;   et al. | 2002-03-21 |
Projection type video display device App 20020033904 - Yamamoto, Hideki ;   et al. | 2002-03-21 |
Display device and liquid crystal projector App 20020030651 - Yamamoto, Hideki | 2002-03-14 |
System and method for distributing digital content App 20020023058 - Taniguchi, Masayuki ;   et al. | 2002-02-21 |
Method and system for selling content App 20020019724 - Yamamoto, Hideki ;   et al. | 2002-02-14 |
Water-repellent glass pane and method for producing same Grant 6,337,133 - Akamatsu , et al. January 8, 2 | 2002-01-08 |
Projection-type display device and method of adjustment thereof Grant 6,331,060 - Yamamoto , et al. December 18, 2 | 2001-12-18 |
Article with antifogging film and process for producing same App 20010036547 - Yamazaki, Seiji ;   et al. | 2001-11-01 |
Hydraulic brake apparatus App 20010035015 - Oishi, Masaki ;   et al. | 2001-11-01 |
Morphological analysis method and device and Japanese language morphological analysis method and device Grant 6,098,035 - Yamamoto , et al. August 1, 2 | 2000-08-01 |
System and method for efficiently retrieving and translating source documents in different languages, and other displaying the translated documents at a client device Grant 5,987,402 - Murata , et al. November 16, 1 | 1999-11-16 |
Catheter assembly Grant 5,902,274 - Yamamoto , et al. May 11, 1 | 1999-05-11 |
Pouring spout structure for paper carton, paper carton having pouring spout, and method of manufacturing such pouring spout Grant 5,653,383 - Adachi , et al. August 5, 1 | 1997-08-05 |
Prism system and a liquid crystal projection device Grant 5,594,591 - Yamamoto , et al. January 14, 1 | 1997-01-14 |
Liquid container with spout Grant 5,325,983 - Imai , et al. July 5, 1 | 1994-07-05 |
Process for producing liquid-container material Grant 5,296,070 - Take , et al. March 22, 1 | 1994-03-22 |
Method for the quantitative determination of antigens and antibodies by ratio of absorbances at different wavelengths Grant 5,093,271 - Yamamoto March 3, 1 | 1992-03-03 |
Lens frame Grant 5,054,886 - Ozaki , et al. October 8, 1 | 1991-10-08 |
Titanium carbo-nitride and chromium carbide-based ceramics containing metals Grant 4,948,425 - Watanabe , et al. August 14, 1 | 1990-08-14 |
Start circuit for adapting a constant current generator to a wide variety of loads Grant 4,890,214 - Yamamoto December 26, 1 | 1989-12-26 |
Waterproof water-vapor-permeable laminated structure and applications of the same Grant 4,857,393 - Kato , et al. August 15, 1 | 1989-08-15 |
System with a timer screen, for reserving the recording of TV programs Grant 4,847,696 - Matsumoto , et al. July 11, 1 | 1989-07-11 |
Database processing device Grant 4,821,175 - Hikita , et al. April 11, 1 | 1989-04-11 |
Join operation processing system in distributed data base management system Grant 4,811,207 - Hikita , et al. March 7, 1 | 1989-03-07 |
Teachable inspection controller Grant 4,807,162 - Shibayama , et al. February 21, 1 | 1989-02-21 |
Electric power supply circuit capable of reducing a loss of electric power Grant 4,644,458 - Harafuji , et al. February 17, 1 | 1987-02-17 |
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