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Parabolic antenna dish
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Patent number 4,916,459
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Issue date Apr 10, 1990
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Hitachi, Ltd.
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Hiroshi Kurosawa
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H01 - BASIC ELECTRIC ELEMENTS
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Parabolic antenna
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Patent number 4,860,021
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Issue date Aug 22, 1989
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Hitachi, Ltd.
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Hiroshi Kurosawa
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H01 - BASIC ELECTRIC ELEMENTS
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Method of forming spherical shells
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Patent number 4,748,837
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Issue date Jun 7, 1988
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Hitachi, Ltd.
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Hiroshi Kurosawa
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rotor for electric motor
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Patent number 4,746,827
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Issue date May 24, 1988
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Hitachi, Ltd.
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Izumi Ochiai
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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-
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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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