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3310759
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Patent number 3,310,759
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Issue date Mar 21, 1967
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H03 - BASIC ELECTRONIC CIRCUITRY
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3292109
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Patent number 3,292,109
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Issue date Dec 13, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY
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3251026
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Patent number 3,251,026
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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3171087
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Patent number 3,171,087
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Issue date Feb 23, 1965
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H03 - BASIC ELECTRONIC CIRCUITRY
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3134082
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H03 - BASIC ELECTRONIC CIRCUITRY
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3121849
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Patent number 3,121,849
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H03 - BASIC ELECTRONIC CIRCUITRY
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3047821
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H03 - BASIC ELECTRONIC CIRCUITRY
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3038133
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Patent number 3,038,133
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H03 - BASIC ELECTRONIC CIRCUITRY
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3011064
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Patent number 3,011,064
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Issue date Nov 28, 1961
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H03 - BASIC ELECTRONIC CIRCUITRY
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3010085
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Patent number 3,010,085
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Issue date Nov 21, 1961
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H03 - BASIC ELECTRONIC CIRCUITRY
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2994842
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Patent number 2,994,842
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H03 - BASIC ELECTRONIC CIRCUITRY
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2944229
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Patent number 2,944,229
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Issue date Jul 5, 1960
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H03 - BASIC ELECTRONIC CIRCUITRY
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2944220
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Patent number 2,944,220
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Issue date Jul 5, 1960
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H03 - BASIC ELECTRONIC CIRCUITRY
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2927283
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Patent number 2,927,283
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H03 - BASIC ELECTRONIC CIRCUITRY
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2887664
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Patent number 2,887,664
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Issue date May 19, 1959
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H03 - BASIC ELECTRONIC CIRCUITRY
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2887665
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Patent number 2,887,665
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Issue date May 19, 1959
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H03 - BASIC ELECTRONIC CIRCUITRY
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2885492
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Patent number 2,885,492
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Issue date May 5, 1959
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2885640
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Patent number 2,885,640
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Issue date May 5, 1959
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H03 - BASIC ELECTRONIC CIRCUITRY
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2834943
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H03 - BASIC ELECTRONIC CIRCUITRY
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2775658
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Patent number 2,775,658
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2768354
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Patent number 2,768,354
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H03 - BASIC ELECTRONIC CIRCUITRY
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2764676
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Patent number 2,764,676
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Issue date Sep 25, 1956
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H04 - ELECTRIC COMMUNICATION TECHNIQUE