THROUGH-TUBING NONRETRIEVABLE BRIDGE PLUG,申请号USD3561529-传众专利搜索

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发明名称	THROUGH-TUBING NONRETRIEVABLE BRIDGE PLUG
摘要
申请公布号	US3561529(A)	申请公布日期	1971.02.09
申请号	USD3561529	申请日期	1968.10.02
申请人	ELECTRIC WIRELINE SPECIALTIES INC.	发明人	ARTHUR L. OWEN
分类号	E21B33/134;(IPC1-7):E21B33/13	主分类号	E21B33/134
代理机构		代理人
主权项
地址

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