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3803149
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Patent number 3,803,149
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Issue date Apr 9, 1974
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C07 - ORGANIC CHEMISTRY
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3780059
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Patent number 3,780,059
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Issue date Dec 18, 1973
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C07 - ORGANIC CHEMISTRY
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3723463
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Patent number 3,723,463
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Issue date Mar 27, 1973
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C07 - ORGANIC CHEMISTRY
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3657276
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Patent number 3,657,276
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Issue date Apr 18, 1972
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C07 - ORGANIC CHEMISTRY
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3657275
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Patent number 3,657,275
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Issue date Apr 18, 1972
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C07 - ORGANIC CHEMISTRY