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发明名称
BOHRKOPF EINES DREHSCHLAGBOHRERS
摘要
申请公布号
DE2807197(A1)
申请公布日期
1979.08.30
申请号
DE19782807197
申请日期
1978.02.20
申请人
GEBRUEDER HELLER VERWALTUNGSGESELLSCHAFT MBH
发明人
KLEINE,WERNER,DIPL.-ING.DIPL.-WIRTSCH.-ING.
分类号
E21B10/38;E21B21/16;(IPC1-7):E21C13/06
主分类号
E21B10/38
代理机构
代理人
主权项
地址
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