Borehole deflecting tool,申请号US19400347440-传众专利搜索

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发明名称	Borehole deflecting tool
摘要
申请公布号	US2317010(A)	申请公布日期	1943.04.20
申请号	US19400347440	申请日期	1940.07.25
申请人	WINGARD WILLIAM F	发明人	WINGARD WILLIAM F.
分类号	E21B7/06;E21B7/08	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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