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发明名称
Gesteinsbohrer
摘要
申请公布号
CH502173(A)
申请公布日期
1971.01.31
申请号
CH19690018565
申请日期
1969.12.11
申请人
HAWERA HARTMETALL-WERKZEUGFABRIK RAVENSBURG GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
发明人
HARZ,WILLI
分类号
E21B10/36;E21B10/58;(IPC1-7):B28D1/14;E21C13/06
主分类号
E21B10/36
代理机构
代理人
主权项
地址
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