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发明名称
TOOL FOR WELL EQUIPMENT
摘要
申请公布号
JPS54110901(A)
申请公布日期
1979.08.30
申请号
JP19780076935
申请日期
1978.06.24
申请人
OTIS ENG CORP
发明人
RONARUDO KEI CHIYAACHIMAN
分类号
E21B23/03;E21B23/04
主分类号
E21B23/03
代理机构
代理人
主权项
地址
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