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3929899
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Patent number 3,929,899
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Issue date Dec 30, 1975
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C07 - ORGANIC CHEMISTRY
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3890246
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Patent number 3,890,246
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Issue date Jun 17, 1975
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C07 - ORGANIC CHEMISTRY
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3787511
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Patent number 3,787,511
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Issue date Jan 22, 1974
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C07 - ORGANIC CHEMISTRY
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3666823
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Patent number 3,666,823
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Issue date May 30, 1972
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C07 - ORGANIC CHEMISTRY
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3544616
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Patent number 3,544,616
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Issue date Dec 1, 1970
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C07 - ORGANIC CHEMISTRY
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3528932
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Patent number 3,528,932
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Issue date Sep 15, 1970
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C07 - ORGANIC CHEMISTRY