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发明名称	WELL PACKER
摘要
申请公布号	GB2091318(A)	申请公布日期	1982.07.28
申请号	GB19810036953	申请日期	1981.12.08
申请人	BROWN OIL TOOLS INC	发明人
分类号	E21B33/1295;(IPC1-7):E21B33/12	主分类号	E21B33/1295
代理机构		代理人
主权项
地址

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