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发明名称
Gesteinsbohrer
摘要
申请公布号
DE919402(C)
申请公布日期
1954.10.21
申请号
DE1950B009061
申请日期
1950.09.02
申请人
ROBERT BOSCH G.M.B.H.
发明人
BAUR OTTMAR
分类号
E21B10/38
主分类号
E21B10/38
代理机构
代理人
主权项
地址
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