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3755288
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Patent number 3,755,288
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Issue date Aug 28, 1973
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C07 - ORGANIC CHEMISTRY
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3755443
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Patent number 3,755,443
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Issue date Aug 28, 1973
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C07 - ORGANIC CHEMISTRY
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3585200
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Patent number 3,585,200
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Issue date Jun 15, 1971
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C07 - ORGANIC CHEMISTRY
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3538046
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Patent number 3,538,046
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Issue date Nov 3, 1970
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C07 - ORGANIC CHEMISTRY
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3399167
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Patent number 3,399,167
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Issue date Aug 27, 1968
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...