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发明名称
Verfahren zur Herstellung eines Hartmetallbohrers, insbesondere zum Bohren in hartem Material, wie Beton oder Stein
摘要
申请公布号
AT242579(B)
申请公布日期
1965.09.27
申请号
AT19630007903
申请日期
1963.10.02
申请人
ARTUR FISCHER
发明人
ARTUR FISCHER
分类号
E21B10/38
主分类号
E21B10/38
代理机构
代理人
主权项
地址
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