Core taker devices,申请号US19630322822-传众专利搜索

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发明名称	Core taker devices
摘要
申请公布号	US3220490(A)	申请公布日期	1965.11.30
申请号	US19630322822	申请日期	1963.11.12
申请人	SCHLUMBERGER WELL SURVEYING CORPORATION	发明人	URBANOSKY HAROLD J.;BRIEGER EMMET F.
分类号	E21B49/04	主分类号	E21B49/04
代理机构		代理人
主权项
地址

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