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发明名称
SPRENGLOCH-BOHRKOPF UND VERSCHLEISSARM VERBUNDSTOFFSCHNEIDE HIEFUER
摘要
申请公布号
ATA409181(A)
申请公布日期
1983.11.15
申请号
AT19810004091
申请日期
1981.09.23
申请人
KENNAMETAL INC.
发明人
分类号
E21B7/00;E21B10/40;E21B10/58;E21B43/263;(IPC1-7):E21B10/26
主分类号
E21B7/00
代理机构
代理人
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