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Trigonometric slide rule
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Patent number 5,084,609
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Issue date Jan 28, 1992
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Gilbert F. Saber
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G06 - COMPUTING CALCULATING COUNTING
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Calculating devices
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Patent number 4,117,973
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Issue date Oct 3, 1978
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Eugene W. Bold
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G06 - COMPUTING CALCULATING COUNTING
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Selector
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Patent number 4,074,116
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Issue date Feb 14, 1978
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William M. Ell
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G06 - COMPUTING CALCULATING COUNTING
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Stock trend indicator
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Patent number 3,984,657
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Issue date Oct 5, 1976
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Preben Jessen
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G06 - COMPUTING CALCULATING COUNTING
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3910607
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Patent number 3,910,607
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Issue date Oct 7, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3890715
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Patent number 3,890,715
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Issue date Jun 24, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3885316
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Patent number 3,885,316
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Issue date May 27, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3883722
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Patent number 3,883,722
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Issue date May 13, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3878612
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Patent number 3,878,612
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Issue date Apr 22, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3878368
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Patent number 3,878,368
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Issue date Apr 15, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3853265
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Patent number 3,853,265
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Issue date Dec 10, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3825180
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Patent number 3,825,180
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Issue date Jul 23, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3813784
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Patent number 3,813,784
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Issue date Jun 4, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3812586
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Patent number 3,812,586
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Issue date May 28, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3789507
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Patent number 3,789,507
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Issue date Feb 5, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3784797
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Patent number 3,784,797
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Issue date Jan 8, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3747846
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Patent number 3,747,846
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Issue date Jul 24, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3747847
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Patent number 3,747,847
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Issue date Jul 24, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3720369
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Patent number 3,720,369
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Issue date Mar 13, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3719806
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Patent number 3,719,806
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Issue date Mar 6, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3716702
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Patent number 3,716,702
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Issue date Feb 13, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3708653
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Patent number 3,708,653
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Issue date Jan 2, 1973
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G06 - COMPUTING CALCULATING COUNTING