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Preparation of coumarins
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Patent number 3,998,851
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Issue date Dec 21, 1976
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Universal Oil Products Company
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Paul H. Reichenbacher
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C07 - ORGANIC CHEMISTRY
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3888883
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Patent number 3,888,883
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Issue date Jun 10, 1975
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C07 - ORGANIC CHEMISTRY
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3878074
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Patent number 3,878,074
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Issue date Apr 15, 1975
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C07 - ORGANIC CHEMISTRY
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3859311
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Patent number 3,859,311
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Issue date Jan 7, 1975
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C07 - ORGANIC CHEMISTRY
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3813414
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Patent number 3,813,414
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Issue date May 28, 1974
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C07 - ORGANIC CHEMISTRY
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3707481
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Patent number 3,707,481
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Issue date Dec 26, 1972
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C07 - ORGANIC CHEMISTRY
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3631067
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Patent number 3,631,067
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Issue date Dec 28, 1971
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C07 - ORGANIC CHEMISTRY
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3567605
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Patent number 3,567,605
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Issue date Mar 2, 1971
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C07 - ORGANIC CHEMISTRY
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2204008
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Patent number 2,204,008
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Issue date Jun 11, 1940
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C07 - ORGANIC CHEMISTRY
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2062364
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Patent number 2,062,364
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Issue date Dec 1, 1936
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C07 - ORGANIC CHEMISTRY
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1945184
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Patent number 1,945,184
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Issue date Jan 30, 1934
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C07 - ORGANIC CHEMISTRY
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1945182
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Patent number 1,945,182
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Issue date Jan 30, 1934
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C07 - ORGANIC CHEMISTRY
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1920494
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Patent number 1,920,494
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Issue date Aug 1, 1933
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C07 - ORGANIC CHEMISTRY
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1437344
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Patent number 1,437,344
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Issue date Nov 28, 1922
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C07 - ORGANIC CHEMISTRY