Apparatus for subsurface investigating,申请号US19460709897-传众专利搜索

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发明名称	Apparatus for subsurface investigating
摘要
申请公布号	US2999979(A)	申请公布日期	1961.09.12
申请号	US19460709897	申请日期	1946.11.15
申请人	WOLL HARRY J	发明人	WOLL HARRY J.
分类号	G01V3/12	主分类号	G01V3/12
代理机构		代理人
主权项
地址

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