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发明名称
FOERFARANDE OCH ANORDNING FOER OBSERVERING AV FRAMTRAENGANDET AV BORRHUVUDET I MULLEN.
摘要
申请公布号
FI896061(A0)
申请公布日期
1989.12.18
申请号
FI19890006061
申请日期
1989.12.18
申请人
ÇBLISÇ
发明人
BELLENS, WILLY
分类号
E21B7/04;E21B47/024;G05D1/02;(IPC1-7):E21B/
主分类号
E21B7/04
代理机构
代理人
主权项
地址
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