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Inverting apparatus
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Patent number 4,709,317
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Issue date Nov 24, 1987
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Hitachi, Ltd.
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Kenichi Iizuka
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Robot operation control system
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Patent number 4,633,414
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Issue date Dec 30, 1986
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Hitachi, Ltd.
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Yuhiko Yabe
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Refrigerator control system
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Patent number 4,566,289
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Issue date Jan 28, 1986
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Hitachi, Ltd.
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Kenichi Iizuka
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Method of manufacturing fan guard
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Patent number 4,509,354
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Issue date Apr 9, 1985
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Hitachi, Ltd.
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Akio Suzuki
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Humidity control apparatus
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Patent number 4,135,370
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Issue date Jan 23, 1979
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Hitachi, Ltd.
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Taisei Hosoda
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F24 - HEATING RANGES VENTILATING