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3890602
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Patent number 3,890,602
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Issue date Jun 17, 1975
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3872726
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Patent number 3,872,726
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Issue date Mar 25, 1975
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G01 - MEASURING TESTING
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3836906
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Patent number 3,836,906
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Issue date Sep 17, 1974
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G11 - INFORMATION STORAGE
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3829853
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Patent number 3,829,853
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H03 - BASIC ELECTRONIC CIRCUITRY
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3815126
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Patent number 3,815,126
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H03 - BASIC ELECTRONIC CIRCUITRY
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3798637
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Patent number 3,798,637
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H03 - BASIC ELECTRONIC CIRCUITRY
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3790886
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Patent number 3,790,886
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Issue date Feb 5, 1974
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G01 - MEASURING TESTING
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3766543
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Patent number 3,766,543
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Issue date Oct 16, 1973
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G05 - CONTROLLING REGULATING
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3766544
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Patent number 3,766,544
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Issue date Oct 16, 1973
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G01 - MEASURING TESTING
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3754233
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Patent number 3,754,233
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H03 - BASIC ELECTRONIC CIRCUITRY
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3750142
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Patent number 3,750,142
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Issue date Jul 31, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3750156
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Patent number 3,750,156
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H03 - BASIC ELECTRONIC CIRCUITRY
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3737891
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Patent number 3,737,891
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Issue date Jun 5, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3732406
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Patent number 3,732,406
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Issue date May 8, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3725905
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Patent number 3,725,905
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Issue date Apr 3, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3725903
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Patent number 3,725,903
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H03 - BASIC ELECTRONIC CIRCUITRY
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3717869
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Patent number 3,717,869
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H03 - BASIC ELECTRONIC CIRCUITRY
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3709309
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Patent number 3,709,309
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G01 - MEASURING TESTING
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3696391
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Patent number 3,696,391
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Issue date Oct 3, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3665305
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Patent number 3,665,305
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H03 - BASIC ELECTRONIC CIRCUITRY
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3654560
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Patent number 3,654,560
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G06 - COMPUTING CALCULATING COUNTING
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3648182
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Patent number 3,648,182
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Issue date Mar 7, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3646545
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Patent number 3,646,545
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H03 - BASIC ELECTRONIC CIRCUITRY
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3646587
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Patent number 3,646,587
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H03 - BASIC ELECTRONIC CIRCUITRY
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3641563
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Patent number 3,641,563
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G11 - INFORMATION STORAGE
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3626407
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Patent number 3,626,407
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H03 - BASIC ELECTRONIC CIRCUITRY
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3624500
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Patent number 3,624,500
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G01 - MEASURING TESTING
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3624414
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Patent number 3,624,414
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3617885
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Patent number 3,617,885
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H03 - BASIC ELECTRONIC CIRCUITRY
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3612975
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Patent number 3,612,975
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Issue date Oct 12, 1971
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G06 - COMPUTING CALCULATING COUNTING