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发明名称
Bohrlochneigungsmesser
摘要
申请公布号
DE801388(C)
申请公布日期
1951.01.04
申请号
DE1949P049529
申请日期
1949.07.21
申请人
GESELLSCHAFT FUER NAUTISCHE UND TIEFBOHRTECHNISCHE INSTRUMENTE M.B.H.;MARTIENSSEN OSCAR DR.
发明人
MARTIENSSEN OSCAR DR.
分类号
E21B47/022
主分类号
E21B47/022
代理机构
代理人
主权项
地址
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