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发明名称
摘要
申请公布号
DE3317592(C2)
申请公布日期
1986.12.18
申请号
DE19833317592
申请日期
1983.05.14
申请人
OSAKEYHTIOE TAMPELLA AB, TAMPERE, FI
发明人
PAEIVAELAEINEN, OSSI, TAMPERE, FI
分类号
E21B19/08;E21B19/086;E21B19/10;E21B19/24;(IPC1-7):E21C9/00;E21B17/10
主分类号
E21B19/08
代理机构
代理人
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