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发明名称
DISPOSITIF POUR LE MAINTIEN A ROTATION D'UN OUTIL DANS UN PORTE-OUTIL
摘要
申请公布号
FR2390618(B1)
申请公布日期
1985.11.29
申请号
FR19770014553
申请日期
1977.05.12
申请人
LAMOURIC POL
发明人
分类号
E21B10/62;E21C35/197;F16B21/18;(IPC1-7):F16B21/18;E02F9/28;E21C35/18
主分类号
E21B10/62
代理机构
代理人
主权项
地址
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