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United States Patent

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United States Patent 3,734,871
Issue Date: May 22, 1973

Current U.S. Class: 521/167 ; 564/475; 564/476; 564/505; 564/506; 564/508
Current International Class: C08G 18/00 (20060101); C08G 65/00 (20060101); C08G 65/26 (20060101); C08G 65/22 (20060101); C08G 18/50 (20060101); C08G 18/32 (20060101)


For U.S. patent law, rules, and procedures see MPEP.

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