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Resonansforstærket boring: fremgangsmåde og apparat
申请公布号:
DK2230375(T3)
申请号:
DK20100165142T
申请日期:
2007.06.11
申请公布日期:
2016.10.10
申请人:
University Court Of The University Of Aberdeen
发明人:
Wiercigroch, Marian
分类号:
E21B7/24;E21B10/36
主分类号:
E21B7/24
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