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发明名称
Deep-hole hammer drill
摘要
申请公布号
CH613748(A5)
申请公布日期
1979.10.15
申请号
CH19760003453
申请日期
1976.03.19
申请人
WALTER, H.P., GMBH + CO. DRUCKLUFTTECHNIK KG
发明人
HANS-PHILIPP WALTER
分类号
E21B4/14;E21B10/38;E21B17/07;(IPC1-7):E21B1/06;E21C3/04;E21C13/08
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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