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2492168
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Issue date Sep 27, 1949
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H03 - BASIC ELECTRONIC CIRCUITRY
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Patent number 2,482,766
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Issue date Sep 27, 1949
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H03 - BASIC ELECTRONIC CIRCUITRY
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Patent number 2,470,802
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H03 - BASIC ELECTRONIC CIRCUITRY
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H03 - BASIC ELECTRONIC CIRCUITRY
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H03 - BASIC ELECTRONIC CIRCUITRY
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H03 - BASIC ELECTRONIC CIRCUITRY
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2280824
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Patent number 2,280,824
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H03 - BASIC ELECTRONIC CIRCUITRY