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3842121
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Patent number 3,842,121
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Issue date Oct 15, 1974
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C07 - ORGANIC CHEMISTRY
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3719694
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Patent number 3,719,694
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Issue date Mar 6, 1973
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C05 - FERTILISERS MANUFACTURE THEREOF
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3663628
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Patent number 3,663,628
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Issue date May 16, 1972
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C07 - ORGANIC CHEMISTRY
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3505419
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Patent number 3,505,419
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Issue date Apr 7, 1970
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C07 - ORGANIC CHEMISTRY
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3356754
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Patent number 3,356,754
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Issue date Dec 5, 1967
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C07 - ORGANIC CHEMISTRY