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经营范围
发明名称
MINE ROOF SUPPORTS
摘要
申请公布号
GB8607932(D0)
申请公布日期
1986.05.08
申请号
GB19860007932
申请日期
1986.04.01
申请人
DOBSON PARK INDUSTRIES PLC
发明人
分类号
E21D23/00;E21D23/04;(IPC1-7):E21D23/03
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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