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Phase controller for motor
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Patent number 4,795,950
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Issue date Jan 3, 1989
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Matsushita Electric Industrial Co., Ltd.
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Kiyoshi Ota
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G11 - INFORMATION STORAGE
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Gameboard teaching apparatus
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Patent number 4,492,581
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Issue date Jan 8, 1985
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Matsushita Electric Industrial Co., Ltd.
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Kazuo Arai
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Remote game apparatus
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Patent number 4,372,558
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Issue date Feb 8, 1983
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Matsushita Electric Industrial Co., Ltd.
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Takeshi Shimamoto
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A63 - SPORTS GAMES AMUSEMENTS
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Motor speed control apparatus
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Patent number 4,105,935
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Issue date Aug 8, 1978
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Matsushita Electric Industrial Co., Ltd.
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Kazuo Arai
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER