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发明名称
KJERNEBORINGSANORDNING.
摘要
申请公布号
NO159955(B)
申请公布日期
1988.11.14
申请号
NO19800000829
申请日期
1980.03.21
申请人
DIAMANT BOART
发明人
LAMBOT, HONORE J.
分类号
E21B25/00;(IPC1-7):E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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