Surveying underground structures,申请号US19340750276-传众专利搜索

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发明名称	Surveying underground structures
摘要
申请公布号	US2049236(A)	申请公布日期	1936.07.28
申请号	US19340750276	申请日期	1934.10.27
申请人	GEOPHYSICAL RESEARCH CORPORATION	发明人	WEATHERBY BENJAMIN B.
分类号	G01V1/047;G01V1/104	主分类号	G01V1/047
代理机构		代理人
主权项
地址

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