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经营范围
发明名称
Gesteinsbohrer
摘要
申请公布号
AT293980(B)
申请公布日期
1971.11.10
申请号
AT19690011571
申请日期
1969.12.12
申请人
HAWERA HARTMETALL-WERKZEUGFABRIK RAVENSBURG GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
发明人
分类号
E21B10/36;E21B10/58;(IPC1-7):E21C13/00
主分类号
E21B10/36
代理机构
代理人
主权项
地址
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