Pressure operated packer,申请号US19560557131-传众专利搜索

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发明名称	Pressure operated packer
摘要
申请公布号	US2880805(A)	申请公布日期	1959.04.07
申请号	US19560557131	申请日期	1956.01.03
申请人	JERSEY PRODUCTION RESEARCH COMPANY	发明人	NELSON NORMAN A.;GIBBS JOE W.
分类号	E21B33/1295	主分类号	E21B33/1295
代理机构		代理人
主权项
地址

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