Pipe and method of making the same,申请号US19300441884-传众专利搜索

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发明名称	Pipe and method of making the same
摘要
申请公布号	US1906010(A)	申请公布日期	1933.04.25
申请号	US19300441884	申请日期	1930.04.05
申请人	NAYLOR PIPE COMPANY	发明人	NAYLOR CARL G.
分类号	B21C37/12	主分类号	B21C37/12
代理机构		代理人
主权项
地址

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