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发明名称
Hammerbohrmaschine fuer waagerechte und senkrechte nach oben und unten gerichtete Gesteinsbohrungen
摘要
申请公布号
DE937161(C)
申请公布日期
1955.12.29
申请号
DE1954M023278
申请日期
1954.06.02
申请人
MAIER NICOLAUS
发明人
MAIER NICOLAUS
分类号
E21B1/30;E21B4/14
主分类号
E21B1/30
代理机构
代理人
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地址
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