Pipe pulling machine,申请号US19440556448-传众专利搜索

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发明名称	Pipe pulling machine
摘要
申请公布号	US2501242(A)	申请公布日期	1950.03.21
申请号	US19440556448	申请日期	1944.09.29
申请人	ROSS SMITH OLIVER	发明人	SMITH OLIVER ROSS
分类号	B23K11/093	主分类号	B23K11/093
代理机构		代理人
主权项
地址

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