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3405154
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Patent number 3,405,154
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Issue date Oct 8, 1968
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C07 - ORGANIC CHEMISTRY
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3104251
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Patent number 3,104,251
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Issue date Sep 17, 1963
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C07 - ORGANIC CHEMISTRY
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3097226
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Patent number 3,097,226
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Issue date Jul 9, 1963
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C07 - ORGANIC CHEMISTRY
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2921949
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Patent number 2,921,949
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Issue date Jan 19, 1960
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C07 - ORGANIC CHEMISTRY
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2873290
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Patent number 2,873,290
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Issue date Feb 10, 1959
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C07 - ORGANIC CHEMISTRY
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2863895
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Patent number 2,863,895
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Issue date Dec 9, 1958
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C07 - ORGANIC CHEMISTRY