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发明名称
EROSIONSFESTER SCHNEIDMEISSEL MIT HARTAUFTRAGSSCHWEISSUNG.
摘要
申请公布号
DE3772955(D1)
申请公布日期
1991.10.17
申请号
DE19873772955
申请日期
1987.12.02
申请人
KENNAMETAL INC., LATROBE, PA., US
发明人
BEACH, WAYNE H., ROARING SPRING, PENNSYLVANIA 16673, US
分类号
E21C35/18;E21B10/58;E21C35/183;(IPC1-7):E21C35/18
主分类号
E21C35/18
代理机构
代理人
主权项
地址
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