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3685041
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Patent number 3,685,041
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Issue date Aug 15, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3641327
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Patent number 3,641,327
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Issue date Feb 8, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3549873
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Patent number 3,549,873
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G06 - COMPUTING CALCULATING COUNTING
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3530457
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Patent number 3,530,457
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Issue date Sep 22, 1970
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G06 - COMPUTING CALCULATING COUNTING
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3382348
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Patent number 3,382,348
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Issue date May 7, 1968
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G06 - COMPUTING CALCULATING COUNTING
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3355725
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Patent number 3,355,725
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Issue date Nov 28, 1967
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G06 - COMPUTING CALCULATING COUNTING
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3131294
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Patent number 3,131,294
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Issue date Apr 28, 1964
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G06 - COMPUTING CALCULATING COUNTING
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3099742
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Patent number 3,099,742
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Issue date Jul 30, 1963
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G06 - COMPUTING CALCULATING COUNTING
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3038657
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Patent number 3,038,657
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Issue date Jun 12, 1962
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G06 - COMPUTING CALCULATING COUNTING
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3021518
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Patent number 3,021,518
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G06 - COMPUTING CALCULATING COUNTING
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2885148
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Patent number 2,885,148
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Issue date May 5, 1959
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G06 - COMPUTING CALCULATING COUNTING
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2819839
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Patent number 2,819,839
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Issue date Jan 14, 1958
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G06 - COMPUTING CALCULATING COUNTING
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2787415
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Patent number 2,787,415
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G06 - COMPUTING CALCULATING COUNTING
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2665027
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Patent number 2,665,027
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Issue date Jan 5, 1954
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G06 - COMPUTING CALCULATING COUNTING
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2665067
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Patent number 2,665,067
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Issue date Jan 5, 1954
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G06 - COMPUTING CALCULATING COUNTING
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2651458
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G06 - COMPUTING CALCULATING COUNTING
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2638267
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Patent number 2,638,267
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G06 - COMPUTING CALCULATING COUNTING
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2620974
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G06 - COMPUTING CALCULATING COUNTING
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2616624
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Patent number 2,616,624
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G06 - COMPUTING CALCULATING COUNTING
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2601281
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Patent number 2,601,281
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Issue date Jun 24, 1952
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G06 - COMPUTING CALCULATING COUNTING