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3766544
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G01 - MEASURING TESTING
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3671750
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H03 - BASIC ELECTRONIC CIRCUITRY
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3648276
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G01 - MEASURING TESTING
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3618074
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Patent number 3,618,074
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H03 - BASIC ELECTRONIC CIRCUITRY
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3603978
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Patent number 3,603,978
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H03 - BASIC ELECTRONIC CIRCUITRY
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3588887
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Patent number 3,588,887
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H03 - BASIC ELECTRONIC CIRCUITRY
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3564540
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Patent number 3,564,540
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H03 - BASIC ELECTRONIC CIRCUITRY
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3553679
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Patent number 3,553,679
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G01 - MEASURING TESTING
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3548397
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Patent number 3,548,397
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H03 - BASIC ELECTRONIC CIRCUITRY
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3543375
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Patent number 3,543,375
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3540036
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Patent number 3,540,036
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Issue date Nov 10, 1970
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H03 - BASIC ELECTRONIC CIRCUITRY
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3540040
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Patent number 3,540,040
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G01 - MEASURING TESTING
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3518663
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Patent number 3,518,663
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H03 - BASIC ELECTRONIC CIRCUITRY
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3503065
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G05 - CONTROLLING REGULATING
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3500449
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Patent number 3,500,449
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G05 - CONTROLLING REGULATING
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3499134
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Patent number 3,499,134
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H03 - BASIC ELECTRONIC CIRCUITRY
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3487399
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Patent number 3,487,399
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3484776
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Patent number 3,484,776
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3478346
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Patent number 3,478,346
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H03 - BASIC ELECTRONIC CIRCUITRY
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3471850
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3466646
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3465331
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3435446
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H03 - BASIC ELECTRONIC CIRCUITRY
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3432847
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3426347
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H03 - BASIC ELECTRONIC CIRCUITRY
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3416151
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H03 - BASIC ELECTRONIC CIRCUITRY
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3400391
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G05 - CONTROLLING REGULATING
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3381288
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3371335
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G01 - MEASURING TESTING
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3364359
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H03 - BASIC ELECTRONIC CIRCUITRY