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经营范围
发明名称
BORSTANG FOR SLAGBORING.
摘要
申请公布号
NO138459(C)
申请公布日期
1979.05.22
申请号
NO19740002349
申请日期
1974.06.27
申请人
SANDVIK AKTIEBOLAG,
发明人
LUNDSTROEM, HANS PER OLOF,;JOHANSSON, ERNST LENNART,
分类号
E21B17/16;E21B6/00;E21B6/02;E21B7/20;E21B17/00;E21B21/00;(IPC1-7):E21C15/00
主分类号
E21B17/16
代理机构
代理人
主权项
地址
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