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经营范围
发明名称
UNDERGROUND ROADWAY SUPPORT
摘要
申请公布号
GB8604366(D0)
申请公布日期
1986.03.26
申请号
GB19860004366
申请日期
1986.02.21
申请人
NCB (ENTERPRISE) LTD
发明人
分类号
E21D11/15;E21D11/18;(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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