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发明名称
BORRNINGSANORDNING
摘要
申请公布号
FI831054(A0)
申请公布日期
1983.03.28
申请号
FI19830001054
申请日期
1983.03.28
申请人
ENGTECH S.A
发明人
KAALSTAD, OSCAR WILLIAM
分类号
E21B;E21B10/04;E21B10/12;E21B10/28;E21B10/30;E21B10/34;E21B17/10;(IPC1-7):E21B10/12
主分类号
E21B
代理机构
代理人
主权项
地址
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