Method of making composite valves,申请号US19310538787-传众专利搜索

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发明名称	Method of making composite valves
摘要
申请公布号	US1889916(A)	申请公布日期	1932.12.06
申请号	US19310538787	申请日期	1931.05.20
申请人	THOMPSON PRODUCTS, INCORPORATED	发明人	COLWELL ARCHIE T.
分类号		主分类号
代理机构		代理人
主权项
地址

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