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Switch device
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Patent number 8,013,265
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Issue date Sep 6, 2011
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Panasonic Corporation
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Kazuhisa Fujita
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H01 - BASIC ELECTRIC ELEMENTS
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Lighting apparatus
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Patent number 6,837,604
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Issue date Jan 4, 2005
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Matsushita Electric Industrial Co., Ltd.
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Shigetaka Douzono
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G06 - COMPUTING CALCULATING COUNTING
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Illumination type keyboard
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Patent number 6,764,191
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Issue date Jul 20, 2004
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Matsushita Electric Industrial Co., Ltd.
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Shigetaka Douzono
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G06 - COMPUTING CALCULATING COUNTING
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Illuminated keyboard switch
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Patent number 6,686,549
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Issue date Feb 3, 2004
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Matsushita Electric Industrial Co., Ltd.
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Shigetaka Douzono
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G06 - COMPUTING CALCULATING COUNTING
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Illuminated button switch
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Patent number 6,670,565
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Issue date Dec 30, 2003
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Matsushita Electric Industrial Co., Ltd.
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Tetsuro Hanahara
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H01 - BASIC ELECTRIC ELEMENTS