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发明名称
FOERFARANDE OCH DOSERINGSANORDNING FOER INMATNING AV LOEDMATERIAL I ETT BORRHAOL.
摘要
申请公布号
FI902280(A)
申请公布日期
1991.09.30
申请号
FI19900002280
申请日期
1990.05.07
申请人
OY TAMPELLA AB
发明人
LEPPAENEN, JARMO
分类号
E21D20/02;(IPC1-7):E21D/
主分类号
E21D20/02
代理机构
代理人
主权项
地址
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