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发明名称
Verfahren und Vorrichtung zum Bohren von Loechern in Stein oder Beton
摘要
申请公布号
DE810610(C)
申请公布日期
1951.08.13
申请号
DE1950M001486
申请日期
1950.01.14
申请人
ADOLF MESSER G.M.B.H.
发明人
WIEGAND ALEXANDER DIPL.-ING.;MUELLER WALTER
分类号
E21B7/14
主分类号
E21B7/14
代理机构
代理人
主权项
地址
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