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发明名称
FREMGANGSMAATE VED SELEKTIV UNDERJORDISK BRYTNING OG STABILISERING AV ROM I FJELL
摘要
申请公布号
NO792546(A)
申请公布日期
1980.02.05
申请号
NO19790002546
申请日期
1979.08.02
申请人
GRAENGES AB,;HOBERSTORFER, GUSTAV,;NOREN, TORSTEN,
发明人
HOBERSTORFER, GUSTAV,;NOREN, TORSTEN,
分类号
E21C41/00;E21C41/16;E21D9/00;E21F15/00;(IPC1-7):E21D/
主分类号
E21C41/00
代理机构
代理人
主权项
地址
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