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发明名称
Borkróna
摘要
申请公布号
IS4421(A)
申请公布日期
1997.01.30
申请号
IS19970004421
申请日期
1997.01.30
申请人
REBURG PATENTVERWERTUNGSGESELLSCHAFT MBH
发明人
HEINZ GRUBER
分类号
E21B10/60;E21B10/38;E21B10/40;E21B10/58;(IPC1-7):E21B10/58
主分类号
E21B10/60
代理机构
代理人
主权项
地址
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