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Six sigma calculator
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Patent number 5,731,572
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Issue date Mar 24, 1998
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Hughes Electronics
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Kirk T. Winn
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G06 - COMPUTING CALCULATING COUNTING
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Lead calculator
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Patent number 4,329,570
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Issue date May 11, 1982
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LeadRite Corporation
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Laurel A. Koll
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G06 - COMPUTING CALCULATING COUNTING
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3822038
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Patent number 3,822,038
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Issue date Jul 2, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3821521
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Patent number 3,821,521
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Issue date Jun 28, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3784093
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Patent number 3,784,093
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Issue date Jan 8, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3782626
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Patent number 3,782,626
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Issue date Jan 1, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3747845
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Patent number 3,747,845
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Issue date Jul 24, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3733470
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Patent number 3,733,470
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Issue date May 15, 1973
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G06 - COMPUTING CALCULATING COUNTING
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3700162
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Patent number 3,700,162
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Issue date Oct 24, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3699313
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Patent number 3,699,313
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Issue date Oct 17, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3677467
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Patent number 3,677,467
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Issue date Jul 18, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3670958
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Patent number 3,670,958
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Issue date Jun 20, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3643859
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Patent number 3,643,859
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Issue date Feb 22, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3639733
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Patent number 3,639,733
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Issue date Feb 1, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3630435
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Patent number 3,630,435
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Issue date Dec 28, 1971
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G06 - COMPUTING CALCULATING COUNTING
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3618591
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Patent number 3,618,591
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Issue date Nov 9, 1971
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3604622
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Patent number 3,604,622
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Issue date Sep 14, 1971
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G06 - COMPUTING CALCULATING COUNTING
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3568922
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Patent number 3,568,922
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Issue date Mar 9, 1971
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G06 - COMPUTING CALCULATING COUNTING
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3563456
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Patent number 3,563,456
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Issue date Feb 16, 1971
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G06 - COMPUTING CALCULATING COUNTING
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3485447
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Patent number 3,485,447
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Issue date Dec 23, 1969
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G06 - COMPUTING CALCULATING COUNTING
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3443749
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Patent number 3,443,749
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Issue date May 13, 1969
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G06 - COMPUTING CALCULATING COUNTING
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3436014
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Patent number 3,436,014
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Issue date Apr 1, 1969
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G06 - COMPUTING CALCULATING COUNTING
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3397838
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Patent number 3,397,838
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Issue date Aug 20, 1968
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G06 - COMPUTING CALCULATING COUNTING
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3374947
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Patent number 3,374,947
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Issue date Mar 26, 1968
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G06 - COMPUTING CALCULATING COUNTING
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3347458
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Patent number 3,347,458
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Issue date Oct 17, 1967
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G06 - COMPUTING CALCULATING COUNTING
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3309017
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Patent number 3,309,017
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Issue date Mar 14, 1967
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G06 - COMPUTING CALCULATING COUNTING
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3297247
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Patent number 3,297,247
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Issue date Jan 10, 1967
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G06 - COMPUTING CALCULATING COUNTING
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3289930
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Patent number 3,289,930
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Issue date Dec 6, 1966
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G06 - COMPUTING CALCULATING COUNTING