WELL PACKER VALVE STRUCTURE,申请号CAD860098-传众专利搜索

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发明名称	WELL PACKER VALVE STRUCTURE
摘要
申请公布号	CA860098(A)	申请公布日期	1971.01.05
申请号	CAD860098	申请日期
申请人	SCHLUMBERGER TECHNOLOGY CORPORATION	发明人	JOHN E. STACHOWIAK
分类号	E21B33/129	主分类号	E21B33/129
代理机构		代理人
主权项
地址

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