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3874961
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Issue date Apr 1, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3867758
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Patent number 3,867,758
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H01 - BASIC ELECTRIC ELEMENTS
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3842193
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Patent number 3,842,193
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Issue date Oct 15, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3470045
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Patent number 3,470,045
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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3451204
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H01 - BASIC ELECTRIC ELEMENTS
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3378419
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H01 - BASIC ELECTRIC ELEMENTS
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3294604
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H01 - BASIC ELECTRIC ELEMENTS
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3217084
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H01 - BASIC ELECTRIC ELEMENTS
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3192309
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Patent number 3,192,309
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2454003
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H01 - BASIC ELECTRIC ELEMENTS
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2025540
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H01 - BASIC ELECTRIC ELEMENTS
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1997910
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H01 - BASIC ELECTRIC ELEMENTS
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H01 - BASIC ELECTRIC ELEMENTS
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1517818
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H01 - BASIC ELECTRIC ELEMENTS