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Elapsed time indicator
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Patent number 4,550,676
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Issue date Nov 5, 1985
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S. C. Johnson & Son, Inc.
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Alan W. Francis
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G04 - HOROLOGY
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Humidity sensor
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Patent number 4,041,437
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Issue date Aug 9, 1977
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Matsushita Electric Industrial Co., Ltd.
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Mikio Matsuura
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G01 - MEASURING TESTING
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Fuel moisture analog
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Patent number 3,972,826
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Issue date Aug 3, 1976
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The United States of America as represented by the Secretary of Agriculture
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Michael Allen Fosberg
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G01 - MEASURING TESTING
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3898172
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Patent number 3,898,172
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Issue date Aug 5, 1975
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3865537
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Patent number 3,865,537
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Issue date Feb 11, 1975
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F21 - LIGHTING
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3770362
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Patent number 3,770,362
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Issue date Nov 6, 1973
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G01 - MEASURING TESTING
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3748272
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Patent number 3,748,272
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Issue date Jul 24, 1973
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3721631
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Patent number 3,721,631
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Issue date Mar 20, 1973
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G01 - MEASURING TESTING
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3548639
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Patent number 3,548,639
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Issue date Dec 22, 1970
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G01 - MEASURING TESTING
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3533276
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Patent number 3,533,276
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Issue date Oct 13, 1970
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G01 - MEASURING TESTING
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3533277
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Patent number 3,533,277
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Issue date Oct 13, 1970
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G01 - MEASURING TESTING
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3499316
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Patent number 3,499,316
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Issue date Mar 10, 1970
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G01 - MEASURING TESTING
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3102051
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Patent number 3,102,051
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Issue date Aug 27, 1963
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2862090
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Patent number 2,862,090
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Issue date Nov 25, 1958
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G01 - MEASURING TESTING
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2687041
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Patent number 2,687,041
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Issue date Aug 24, 1954
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G01 - MEASURING TESTING