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3825925
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Patent number 3,825,925
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Issue date Jul 23, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3812481
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Patent number 3,812,481
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Issue date May 21, 1974
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G01 - MEASURING TESTING
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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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3787835
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Patent number 3,787,835
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Issue date Jan 22, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3768022
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Patent number 3,768,022
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Issue date Oct 23, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3766545
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Patent number 3,766,545
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G01 - MEASURING TESTING
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3745559
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Patent number 3,745,559
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Issue date Jul 10, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3745560
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Patent number 3,745,560
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Issue date Jul 10, 1973
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G01 - MEASURING TESTING
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3742487
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Patent number 3,742,487
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Issue date Jun 26, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3729733
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Patent number 3,729,733
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Issue date Apr 24, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3686487
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Patent number 3,686,487
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Issue date Aug 22, 1972
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G01 - MEASURING TESTING
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3683367
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Patent number 3,683,367
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Issue date Aug 8, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3668693
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Patent number 3,668,693
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Issue date Jun 6, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3662377
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Patent number 3,662,377
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Issue date May 9, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3641562
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Patent number 3,641,562
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Issue date Feb 8, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3641565
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Patent number 3,641,565
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Issue date Feb 8, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3629739
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Patent number 3,629,739
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Issue date Dec 21, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3624641
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Patent number 3,624,641
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Issue date Nov 30, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3588462
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Patent number 3,588,462
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Issue date Jun 28, 1971
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G01 - MEASURING TESTING
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3579229
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Patent number 3,579,229
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H03 - BASIC ELECTRONIC CIRCUITRY
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3573793
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Patent number 3,573,793
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Issue date Apr 6, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3573796
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Patent number 3,573,796
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Issue date Apr 6, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3571725
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Patent number 3,571,725
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3569821
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Patent number 3,569,821
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Issue date Mar 9, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3569952
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Patent number 3,569,952
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Issue date Mar 9, 1971
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3569958
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Patent number 3,569,958
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Issue date Mar 9, 1971
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G06 - COMPUTING CALCULATING COUNTING
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3568179
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Patent number 3,568,179
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Issue date Mar 2, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3568182
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Patent number 3,568,182
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3566397
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Patent number 3,566,397
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Issue date Feb 23, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY