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3872300
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H03 - BASIC ELECTRONIC CIRCUITRY
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3795803
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Patent number 3,795,803
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H01 - BASIC ELECTRIC ELEMENTS
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3790795
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Patent number 3,790,795
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Issue date Feb 5, 1974
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G01 - MEASURING TESTING
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3651423
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Patent number 3,651,423
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Issue date Mar 21, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3651426
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Patent number 3,651,426
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H03 - BASIC ELECTRONIC CIRCUITRY
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3579143
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Patent number 3,579,143
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Issue date May 18, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3573469
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Patent number 3,573,469
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G11 - INFORMATION STORAGE
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3562667
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Patent number 3,562,667
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H03 - BASIC ELECTRONIC CIRCUITRY
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3555282
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Patent number 3,555,282
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H01 - BASIC ELECTRIC ELEMENTS
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3538451
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Patent number 3,538,451
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H03 - BASIC ELECTRONIC CIRCUITRY
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H03 - BASIC ELECTRONIC CIRCUITRY
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H01 - BASIC ELECTRIC ELEMENTS
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H01 - BASIC ELECTRIC ELEMENTS
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H03 - BASIC ELECTRONIC CIRCUITRY