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发明名称
KJERNEBOR.
摘要
申请公布号
NO872073(D0)
申请公布日期
1987.05.18
申请号
NO19870002073
申请日期
1987.05.18
申请人
DIAMANT BOART STRATABIT LTD
发明人
IKKE OPPGITT
分类号
E21B25/16;(IPC1-7):E21B/
主分类号
E21B25/16
代理机构
代理人
主权项
地址
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