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3438994
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Patent number 3,438,994
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Issue date Apr 15, 1969
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C07 - ORGANIC CHEMISTRY
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3246005
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Patent number 3,246,005
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Issue date Apr 12, 1966
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C07 - ORGANIC CHEMISTRY
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3192205
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Patent number 3,192,205
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Issue date Jun 29, 1965
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C07 - ORGANIC CHEMISTRY
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3143544
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Patent number 3,143,544
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Issue date Aug 4, 1964
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C07 - ORGANIC CHEMISTRY
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3140283
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Patent number 3,140,283
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Issue date Jul 7, 1964
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C07 - ORGANIC CHEMISTRY