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发明名称
Wand-Bergbausystem
摘要
申请公布号
DE4495020(T1)
申请公布日期
1996.09.26
申请号
DE19944495020T
申请日期
1994.07.12
申请人
THE BROKEN HILL PROPRIETARY CO. LTD., MELBOURNE, VICTORIA, AU
发明人
MARSHALL, GORDON ALEXANDER, CAMBERWELL, VICTORIA, AU;RIGBY, GEOFFREY RAYMOND, CHARLESTOWN, NEW SOUTH WALES, AU
分类号
E21C25/58;E21C25/68;E21C27/24;E21C41/28;E21F7/00;E21F13/08;(IPC1-7):E21C41/28;E21C47/04;E21F5/00
主分类号
E21C25/58
代理机构
代理人
主权项
地址
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