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发明名称
RENGOERINGS- ELLER UTJAEMNINGSANORDNING, SAERSKILT FOER TAK TILL GRUVGAONGAR, UNDERJORDISKA UTGRAEVNINGAR OCH MOTSVARANDE.
摘要
申请公布号
FI883564(A0)
申请公布日期
1988.07.29
申请号
FI19880003564
申请日期
1988.07.29
申请人
SOREIS SOC
发明人
PRADELLE, BERNARD
分类号
E21C37/22;E21C37/24;(IPC1-7):E21F/
主分类号
E21C37/22
代理机构
代理人
主权项
地址
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