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3843607
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3824214
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Patent number 3,824,214
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3758597
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Patent number 3,758,597
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C07 - ORGANIC CHEMISTRY
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3715387
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Patent number 3,715,387
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C07 - ORGANIC CHEMISTRY
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3687914
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Patent number 3,687,914
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3575893
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Patent number 3,575,893
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3551524
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Patent number 3,551,524
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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3536684
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Patent number 3,536,684
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3511820
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Patent number 3,511,820
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3497486
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Patent number 3,497,486
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3477991
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Patent number 3,477,991
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3392176
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3320222
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3251789
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3245928
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Patent number 3,174,952
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3069399
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3063975
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3062784
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C07 - ORGANIC CHEMISTRY
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3038890
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2987556
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C07 - ORGANIC CHEMISTRY
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2985635
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C07 - ORGANIC CHEMISTRY
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2985611
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Patent number 2,985,611
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2816028
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Patent number 2,816,028
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