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发明名称
Schlagbohrer mit Hartmetallschneide mit nur einer sich quer ueber den Bohrerkopf erstreckenden Schneidkante
摘要
申请公布号
DE1048848(B)
申请公布日期
1959.01.22
申请号
DE1954H020859
申请日期
1954.07.14
申请人
HELLEFORS BRUKS AKTIEBOLAG
发明人
分类号
E21B10/58
主分类号
E21B10/58
代理机构
代理人
主权项
地址
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