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经营范围
发明名称
VALVE ARRANGEMENT IN A HYDRAULIC PERCUSSIVE ROCK DRILL
摘要
申请公布号
EP0785845(A1)
申请公布日期
1997.07.30
申请号
EP19950934224
申请日期
1995.10.17
申请人
BRIGGS, ROGER ROBARTS;LEPPANEN, JARMO UOLEVI
发明人
BRIGGS, ROGER ROBARTS;LEPPANEN, JARMO UOLEVI
分类号
B25D9/14;E21B1/00;E21B1/26;(IPC1-7):B25D9/14
主分类号
B25D9/14
代理机构
代理人
主权项
地址
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