Method of making concrete conduits,申请号US19320603138-传众专利搜索

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发明名称	Method of making concrete conduits
摘要
申请公布号	US1949650(A)	申请公布日期	1934.03.06
申请号	US19320603138	申请日期	1932.04.04
申请人	LINDAS HENRY E	发明人	LINDAS HENRY E.
分类号	B28B21/88;C08J5/00;C08L21/00	主分类号	B28B21/88
代理机构		代理人
主权项
地址

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