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经营范围
发明名称
ROCK DRILLING TOOL
摘要
申请公布号
EP0003816(B1)
申请公布日期
1981.06.17
申请号
EP19790100476
申请日期
1979.02.19
申请人
GEBRUDER HELLER VERWALTUNGSGESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
KLEINE, WERNER
分类号
B23B51/04;E21B10/38;E21B10/40;(IPC1-7):21B10/36;23B51/00
主分类号
B23B51/04
代理机构
代理人
主权项
地址
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