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发明名称
Mit Hartmetallplaettchen bestueckter zweifluegeliger Drehbohrer zum Bohren von Mineralien od. dgl.
摘要
申请公布号
DE1053446(B)
申请公布日期
1959.03.26
申请号
DE1954K021153
申请日期
1954.02.15
申请人
DIPL.-ING. BERTOLD KURTZ
发明人
KURTZ DIPL.-ING. BERTOLD
分类号
E21B10/54
主分类号
E21B10/54
代理机构
代理人
主权项
地址
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