TWO-WAY PLUGS FOR WELLS,申请号CA19902020975-传众专利搜索

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发明名称	TWO-WAY PLUGS FOR WELLS
摘要
申请公布号	CA2020975(A1)	申请公布日期	1991.01.18
申请号	CA19902020975	申请日期	1990.07.11
申请人	OTIS ENGINEERING CORPORATION	发明人	GAZDA, IMRE I.;COLLINS, DANNIE R.
分类号	E21B17/06;E21B23/02	主分类号	E21B17/06
代理机构		代理人
主权项
地址

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