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发明名称
Trykkforsterker (B)
摘要
申请公布号
NO974429(A)
申请公布日期
1997.09.24
申请号
NO19970004429
申请日期
1997.09.24
申请人
NORSKE STATS OLJESELSKAP AS, DEN
发明人
BAEKKEN, ASBJOERN;ANDERSEN, TORE;STROEM, SIGMUNN;SKAAR, JAN
分类号
E21B7/18;F15B3/00;(IPC1-7):E21B7/18
主分类号
E21B7/18
代理机构
代理人
主权项
地址
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