Arrangement for measuring the local specific resistance of borehole strata,申请号US19380234568-传众专利搜索

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发明名称	Arrangement for measuring the local specific resistance of borehole strata
摘要
申请公布号	US2212273(A)	申请公布日期	1940.08.20
申请号	US19380234568	申请日期	1938.10.12
申请人	OSCAR MARTIENSSEN	发明人	MARTIENSSEN OSCAR
分类号	G01V3/22	主分类号	G01V3/22
代理机构		代理人
主权项
地址

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