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发明名称
GESTEINS-BOHRSPITZE
摘要
申请公布号
DE2807353(A1)
申请公布日期
1978.09.07
申请号
DE19782807353
申请日期
1978.02.21
申请人
SANDVIK AB
发明人
GOESTA LUMEN,KARL LENNART
分类号
E21B10/52;E21B10/56;(IPC1-7):E21C13/06;E21C13/01;E21B9/36
主分类号
E21B10/52
代理机构
代理人
主权项
地址
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