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Programable data entry system
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Patent number 3,965,335
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Issue date Jun 22, 1976
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Sperry Rand Corporation
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Vincent C. Ricci
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G06 - COMPUTING CALCULATING COUNTING
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3843964
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Patent number 3,843,964
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Issue date Oct 22, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3666172
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Patent number 3,666,172
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Issue date May 30, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3536255
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Patent number 3,536,255
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Issue date Oct 27, 1970
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G06 - COMPUTING CALCULATING COUNTING
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3519202
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Patent number 3,519,202
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Issue date Jul 7, 1970
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G06 - COMPUTING CALCULATING COUNTING
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3379106
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Patent number 3,379,106
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Issue date Apr 23, 1968
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G06 - COMPUTING CALCULATING COUNTING
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3343142
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Patent number 3,343,142
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Issue date Sep 19, 1967
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G06 - COMPUTING CALCULATING COUNTING
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2751007
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Patent number 2,751,007
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Issue date Jun 19, 1956
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G06 - COMPUTING CALCULATING COUNTING
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2703617
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Patent number 2,703,617
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Issue date Mar 8, 1955
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G06 - COMPUTING CALCULATING COUNTING
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2620726
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Patent number 2,620,726
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Issue date Dec 9, 1952
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G06 - COMPUTING CALCULATING COUNTING
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2257674
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Patent number 2,257,674
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Issue date Sep 30, 1941
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G06 - COMPUTING CALCULATING COUNTING