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Electromagnetic contactor
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Patent number 4,947,146
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Issue date Aug 7, 1990
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Matsushita Electric Works, Ltd.
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Yasuo Ichimura
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H01 - BASIC ELECTRIC ELEMENTS
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Polarized electromagnetic relay
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Patent number 4,509,026
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Issue date Apr 2, 1985
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Matsushita Electric Works, Ltd.
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Hidetoshi Matsushita
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H01 - BASIC ELECTRIC ELEMENTS
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Electromagnetic relay
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Patent number 4,292,614
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Issue date Sep 29, 1981
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Matsushita Electric Works, Ltd.
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Kenji Ono
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H01 - BASIC ELECTRIC ELEMENTS