Apparatus for controlling flow within a well,申请号US19560592691-传众专利搜索

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发明名称	Apparatus for controlling flow within a well
摘要
申请公布号	US3157233(A)	申请公布日期	1964.11.17
申请号	US19560592691	申请日期	1956.06.20
申请人	OTIS ENGINEERING CORPORATION	发明人	SIZER PHILLIP S.;CHERRY VONNER R.;WILHOIT LOWELL M.
分类号	E21B34/10	主分类号	E21B34/10
代理机构		代理人
主权项
地址

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