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Data guide device
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Patent number 4,431,214
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Issue date Feb 14, 1984
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Federal Paper Board Co., Inc.
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Veronica A. Buffington
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B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
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Analog balance
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Patent number 4,352,978
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Issue date Oct 5, 1982
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James Chappell
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G06 - COMPUTING CALCULATING COUNTING
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Tax calculator
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Patent number 4,324,975
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Issue date Apr 13, 1982
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Robert L. Rees
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G06 - COMPUTING CALCULATING COUNTING
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Slide rule cursor
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Patent number 4,071,189
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Issue date Jan 31, 1978
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Faiz Mohammad Qureshi
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G06 - COMPUTING CALCULATING COUNTING
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Calculator
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Patent number 4,001,551
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Issue date Jan 4, 1977
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Paul A. Hirsimaki
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G06 - COMPUTING CALCULATING COUNTING
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3722796
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Patent number 3,722,796
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Issue date Mar 27, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3526446
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Patent number 3,526,446
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Issue date Sep 1, 1970
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G06 - COMPUTING CALCULATING COUNTING
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3301480
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Patent number 3,301,480
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Issue date Jan 31, 1967
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G06 - COMPUTING CALCULATING COUNTING
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3047222
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Patent number 3,047,222
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Issue date Jul 31, 1962
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G06 - COMPUTING CALCULATING COUNTING
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2968438
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Patent number 2,968,438
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G06 - COMPUTING CALCULATING COUNTING
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2845225
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Patent number 2,845,225
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G06 - COMPUTING CALCULATING COUNTING
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2746346
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Patent number 2,746,346
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Issue date May 22, 1956
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G06 - COMPUTING CALCULATING COUNTING
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2643059
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Patent number 2,643,059
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G06 - COMPUTING CALCULATING COUNTING
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2634912
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Patent number 2,634,912
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G06 - COMPUTING CALCULATING COUNTING
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2556806
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Patent number 2,556,806
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G06 - COMPUTING CALCULATING COUNTING
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2541858
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Patent number 2,541,858
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G06 - COMPUTING CALCULATING COUNTING
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2538502
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Patent number 2,538,502
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G06 - COMPUTING CALCULATING COUNTING
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2478547
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Patent number 2,478,547
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G06 - COMPUTING CALCULATING COUNTING
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2407338
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G06 - COMPUTING CALCULATING COUNTING
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2341681
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G06 - COMPUTING CALCULATING COUNTING
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2136169
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Patent number 2,136,169
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G06 - COMPUTING CALCULATING COUNTING
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2086502
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Patent number 2,086,502
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G06 - COMPUTING CALCULATING COUNTING
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2061853
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Patent number 2,061,853
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G06 - COMPUTING CALCULATING COUNTING
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2005362
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G06 - COMPUTING CALCULATING COUNTING
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1952134
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Patent number 1,952,134
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G06 - COMPUTING CALCULATING COUNTING
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1904474
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G06 - COMPUTING CALCULATING COUNTING
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1875927
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Patent number 1,875,927
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Issue date Sep 6, 1932
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G06 - COMPUTING CALCULATING COUNTING