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发明名称
Bohrspitze
摘要
申请公布号
DE19734068(B4)
申请公布日期
2007.07.05
申请号
DE19971034068
申请日期
1997.08.06
申请人
BEHEERSMAATSCHAPPIJ VERSTRAETEN B.V.
发明人
VERSTRAETEN, ALEXANDER JULIEN
分类号
E21B7/26;E21B10/44
主分类号
E21B7/26
代理机构
代理人
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