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3416151
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Patent number 3,416,151
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H03 - BASIC ELECTRONIC CIRCUITRY
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3392305
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G01 - MEASURING TESTING
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3293635
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H03 - BASIC ELECTRONIC CIRCUITRY
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3245073
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G05 - CONTROLLING REGULATING
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3242477
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Patent number 3,242,477
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H03 - BASIC ELECTRONIC CIRCUITRY
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3238430
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G05 - CONTROLLING REGULATING
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3175138
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Patent number 3,175,138
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G05 - CONTROLLING REGULATING
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3171117
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H03 - BASIC ELECTRONIC CIRCUITRY
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3114144
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Patent number 3,114,144
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Issue date Dec 10, 1963
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H03 - BASIC ELECTRONIC CIRCUITRY
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3086199
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Patent number 3,086,199
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G05 - CONTROLLING REGULATING
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3038153
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Patent number 3,038,153
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H03 - BASIC ELECTRONIC CIRCUITRY
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2981115
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2909769
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H03 - BASIC ELECTRONIC CIRCUITRY
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2899673
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H03 - BASIC ELECTRONIC CIRCUITRY
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2889189
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Patent number 2,889,189
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H03 - BASIC ELECTRONIC CIRCUITRY
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2848670
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G05 - CONTROLLING REGULATING
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2783464
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H03 - BASIC ELECTRONIC CIRCUITRY
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2764344
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H03 - BASIC ELECTRONIC CIRCUITRY
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2752093
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2630481
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Patent number 2,630,481
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2630552
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Patent number 2,630,552
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H03 - BASIC ELECTRONIC CIRCUITRY