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发明名称
APPARAT FOR BORING I OG/ELLER BEKLEDNING AV GRUNNMASSE.
摘要
申请公布号
NO882830(A)
申请公布日期
1989.12.28
申请号
NO19880002830
申请日期
1988.06.27
申请人
NOCO A/S
发明人
KVELLO-AUNE, GUNNAR
分类号
E21B7/20;E21B10/32;E21B10/66;(IPC1-7):E21B7/20
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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