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Wheel calculator
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Patent number 6,926,198
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Issue date Aug 9, 2005
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Ronald Bromberg
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G06 - COMPUTING CALCULATING COUNTING
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Wheel calculator
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Patent number 6,712,264
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Issue date Mar 30, 2004
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Ronald Bromberg
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G06 - COMPUTING CALCULATING COUNTING
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Wheel calculator
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Patent number 6,460,762
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Issue date Oct 8, 2002
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Ronald Bromberg
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G06 - COMPUTING CALCULATING COUNTING
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3707860
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Patent number 3,707,860
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Issue date Jan 2, 1973
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G06 - COMPUTING CALCULATING COUNTING
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2656098
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Patent number 2,656,098
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Issue date Oct 20, 1953
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G06 - COMPUTING CALCULATING COUNTING
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2585578
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Patent number 2,585,578
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Issue date Feb 12, 1952
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G06 - COMPUTING CALCULATING COUNTING
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2533372
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Patent number 2,533,372
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Issue date Dec 12, 1950
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G06 - COMPUTING CALCULATING COUNTING
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2492262
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Patent number 2,492,262
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Issue date Dec 27, 1949
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G06 - COMPUTING CALCULATING COUNTING
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2477392
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Patent number 2,477,392
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Issue date Jul 26, 1949
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G06 - COMPUTING CALCULATING COUNTING
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2278405
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Patent number 2,278,405
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Issue date Mar 31, 1942
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G06 - COMPUTING CALCULATING COUNTING
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1821350
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Patent number 1,821,350
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Issue date Sep 1, 1931
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1765668
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Patent number 1,765,668
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Issue date Jun 24, 1930
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G06 - COMPUTING CALCULATING COUNTING
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1763719
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Patent number 1,763,719
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Issue date Jun 17, 1930
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G06 - COMPUTING CALCULATING COUNTING
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1687633
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Patent number 1,687,633
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Issue date Oct 16, 1928
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G06 - COMPUTING CALCULATING COUNTING
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1600808
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Patent number 1,600,808
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Issue date Sep 21, 1926
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G06 - COMPUTING CALCULATING COUNTING
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1577533
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Patent number 1,577,533
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Issue date Mar 23, 1926
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G06 - COMPUTING CALCULATING COUNTING
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1520727
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Patent number 1,520,727
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Issue date Dec 30, 1924
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G06 - COMPUTING CALCULATING COUNTING