Subsurface actuating device and formation tester valve apparatus,申请号US19620219835-传众专利搜索

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发明名称	Subsurface actuating device and formation tester valve apparatus
摘要
申请公布号	US3221820(A)	申请公布日期	1965.12.07
申请号	US19620219835	申请日期	1962.08.28
申请人	BAKER OIL TOOLS, INC.	发明人	MYERS WILLIAM D.
分类号	E21B34/12;E21B49/08	主分类号	E21B34/12
代理机构		代理人
主权项
地址

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