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发明名称	LOCK OPEN TOOL
摘要
申请公布号	GB8432234(D0)	申请公布日期	1985.01.30
申请号	GB19840032234	申请日期	1984.12.20
申请人	BAKER OIL TOOLS INC	发明人
分类号	E21B34/00;E21B34/14	主分类号	E21B34/00
代理机构		代理人
主权项
地址

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