Double wrapped prestressed concrete pipe,申请号US19530388233-传众专利搜索

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发明名称	Double wrapped prestressed concrete pipe
摘要
申请公布号	US2808851(A)	申请公布日期	1957.10.08
申请号	US19530388233	申请日期	1953.10.26
申请人	UNITED CONCRETE PIPE CORPORATION	发明人	JAMES KENNETH E.
分类号	B28B21/62;F16L25/00	主分类号	B28B21/62
代理机构		代理人
主权项
地址

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