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发明名称
ROOF SUPPORT LAGGING WITH HEADED JOINTING FASTENERS
摘要
申请公布号
PL291887(A1)
申请公布日期
1992.04.21
申请号
PL19910291887
申请日期
1991.10.01
申请人
ROESLER DRAHT AG
发明人
SCHAEFER BERND
分类号
E21D11/15;(IPC1-7):E21D11/15
主分类号
E21D11/15
代理机构
代理人
主权项
地址
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