Apparatus for subsurface exploration,申请号US19480060244-传众专利搜索

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发明名称	Apparatus for subsurface exploration
摘要
申请公布号	US2674049(A)	申请公布日期	1954.04.06
申请号	US19480060244	申请日期	1948.11.16
申请人	UNION OIL COMPANY OF CALIFORNIA	发明人	JR. IVOR J. JAMES,
分类号	E21B47/00	主分类号	E21B47/00
代理机构		代理人
主权项
地址

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