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发明名称
Bohrmeissel
摘要
申请公布号
DE830033(C)
申请公布日期
1952.01.31
申请号
DE1950F000606
申请日期
1950.01.15
申请人
DR.-ING. GUENTHER FLUEGGE
发明人
FLUEGGE DR.-ING. GUENTHER
分类号
E21B10/32
主分类号
E21B10/32
代理机构
代理人
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