Cable tool bit,申请号US19540448810-传众专利搜索

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发明名称	Cable tool bit
摘要
申请公布号	US2802640(A)	申请公布日期	1957.08.13
申请号	US19540448810	申请日期	1954.08.10
申请人	ESSO RESEARCH AND ENGINEERING COMPANY	发明人	BOUCHER FRANK G.;DEILY FREDRIC H.
分类号	E21B10/38	主分类号	E21B10/38
代理机构		代理人
主权项
地址

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