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发明名称
摘要
申请公布号
FR2308022(B1)
申请公布日期
1982.05.07
申请号
FR19760011085
申请日期
1976.04.14
申请人
EMPIRE OIL TOOL CY
发明人
分类号
F16H1/20;E21B4/00;E21B4/02;F16H1/10;(IPC1-7):16H1/20;21B3/12
主分类号
F16H1/20
代理机构
代理人
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