Method and apparatus for electrical prospecting,申请号US19370127227-传众专利搜索

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发明名称	Method and apparatus for electrical prospecting
摘要
申请公布号	US2189377(A)	申请公布日期	1940.02.06
申请号	US19370127227	申请日期	1937.02.23
申请人	HEILAND RESEARCH CORPORATION	发明人	HEILAND CARL A.
分类号	G01V3/06	主分类号	G01V3/06
代理机构		代理人
主权项
地址

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