Sponge and method of treating,申请号US19390252398-传众专利搜索

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发明名称	Sponge and method of treating
摘要
申请公布号	US2257911(A)	申请公布日期	1941.10.07
申请号	US19390252398	申请日期	1939.01.23
申请人	THE GENERAL TIRE & RUBBER COMPANY	发明人	KRAFT HERMAN T.
分类号	A47K7/02	主分类号	A47K7/02
代理机构		代理人
主权项
地址

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