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发明名称
METALL-KARBIDGJENSTANDER OG FREMGANGSMAATE VED DERES FREMSTILLING.
摘要
申请公布号
NO902272(A)
申请公布日期
1990.11.27
申请号
NO19900002272
申请日期
1990.05.23
申请人
SMITH INTERNATIONAL INC
发明人
KESHAVAN, MADAPUSI K.
分类号
B23P5/00;C22C26/00;C23C30/00;E21B10/52;E21B10/56;(IPC1-7):E21B10/46
主分类号
B23P5/00
代理机构
代理人
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地址
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