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发明名称
FOERFARANDE FOER RIKTANDE AV BERGBORRANORDNINGENS MATARBALK SAMT BERGBORRANORDNING OCH MAETNINGSANORDNING
摘要
申请公布号
FI88427(B)
申请公布日期
1993.01.29
申请号
FI19900005920
申请日期
1990.11.30
申请人
OY TAMPELLA AB
发明人
LAPPALAINEN, JUHANI;RINNEMAA, HEIKKI;TUUNANEN, ARI;SAARELAINEN, PERTTI
分类号
E21B7/02;E21B15/00;E21B15/04;E21B19/08;(IPC1-7):E21C11/00
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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