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发明名称
BOHRWEISSEL.
摘要
申请公布号
AT119233(T)
申请公布日期
1995.03.15
申请号
AT19910310787T
申请日期
1991.11.22
申请人
DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED
发明人
STEWART, AULETTE
分类号
E21B10/48;(IPC1-7):E21B10/48
主分类号
E21B10/48
代理机构
代理人
主权项
地址
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