Pipe lining drag device,申请号US19520287298-传众专利搜索

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发明名称	Pipe lining drag device
摘要
申请公布号	US2711000(A)	申请公布日期	1955.06.21
申请号	US19520287298	申请日期	1952.05.12
申请人	PIPE LININGS, INC.	发明人	MATHENY FRANCIS M.
分类号	B28B19/00	主分类号	B28B19/00
代理机构		代理人
主权项
地址

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