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发明名称
SYSTEM FOR CONTROLLING HYDRAULIC DRIVE OF A HAND-HELD MINE DRILLER
摘要
申请公布号
PL160532(B1)
申请公布日期
1993.03.31
申请号
PL19890279698
申请日期
1989.05.29
申请人
发明人
分类号
B25D9/00;E21C;(IPC1-7):E21C3/06
主分类号
B25D9/00
代理机构
代理人
主权项
地址
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