POWER TUBING TONGS,申请号USD3541897-传众专利搜索

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发明名称	POWER TUBING TONGS
摘要
申请公布号	US3541897(A)	申请公布日期	1970.11.24
申请号	USD3541897	申请日期	1968.06.07
申请人	HERBERT D. HORTON	发明人	HERBERT D. HORTON
分类号	E21B19/16;(IPC1-7):B25B17/00	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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