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3862407
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Patent number 3,862,407
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Issue date Jan 21, 1975
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H03 - BASIC ELECTRONIC CIRCUITRY
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3845290
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Patent number 3,845,290
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Issue date Oct 29, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3736412
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Patent number 3,736,412
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Issue date May 29, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3731074
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Patent number 3,731,074
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Issue date May 1, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3728530
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Patent number 3,728,530
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Issue date Apr 17, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3705298
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Patent number 3,705,298
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Issue date Dec 5, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3700872
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Patent number 3,700,872
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Issue date Oct 24, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3688100
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Patent number 3,688,100
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Issue date Aug 29, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3636329
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Patent number 3,636,329
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Issue date Jan 18, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY