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Printed wiring board
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Patent number 6,703,565
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Issue date Mar 9, 2004
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Matsushita Electric Industrial Co., Ltd.
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Masahide Tsukamoto
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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3621560
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Patent number 3,621,560
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Issue date Nov 23, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3615960
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Patent number 3,615,960
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Issue date Oct 26, 1971
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3551586
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Patent number 3,551,586
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Issue date Dec 29, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3474517
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Patent number 3,474,517
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Issue date Oct 28, 1969
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2894868
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Patent number 2,894,868
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Issue date Jul 14, 1959
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H01 - BASIC ELECTRIC ELEMENTS
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2636408
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Patent number 2,636,408
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Issue date Apr 28, 1953
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2147824
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Patent number 2,147,824
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Issue date Feb 21, 1939
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H01 - BASIC ELECTRIC ELEMENTS