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发明名称
ROOF SUPPORT
摘要
申请公布号
GB8301270(D0)
申请公布日期
1983.02.16
申请号
GB19830001270
申请日期
1983.01.18
申请人
DOWTY MINING EQUIPMENT LTD
发明人
分类号
E21D23/06;(IPC1-7):E21D23/04
主分类号
E21D23/06
代理机构
代理人
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