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Object handling devices
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Patent number 5,584,647
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Issue date Dec 17, 1996
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Tokyo Ohka Kogyo Co., Ltd.
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Akira Uehara
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Object handling device
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Patent number 5,083,896
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Issue date Jan 28, 1992
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Tokyo Ohka Kogyo Co., Ltd.
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Akira Uehara
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Plasma reactor
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Patent number 4,946,537
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Issue date Aug 7, 1990
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Tokyo Ohka Kogyo Co., Ltd.
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Isamu Hijikata
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H01 - BASIC ELECTRIC ELEMENTS
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Method of forming silicone film
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Patent number 4,894,254
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Issue date Jan 16, 1990
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Tokyo Ohka Kogyo Co., Ltd.
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Muneo Nakayama
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Wafer holding frame
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Patent number D291413
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Issue date Aug 18, 1987
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Tokyo Denshi Kagaku Co., Ltd.
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Akira Uehara
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D09 - Packages and containers for goods
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Plasma etching method
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Patent number 4,578,559
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Issue date Mar 25, 1986
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Tokyo Ohka Kogyo Co., Ltd.
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Isamu Hijikata
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C03 - GLASS MINERAL OR SLAG WOOL
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