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发明名称
Roof supports suitable for use in mines
摘要
申请公布号
GB1095369(A)
申请公布日期
1967.12.20
申请号
GB19650041189
申请日期
1965.09.28
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
POTTS MICHAEL CHARLES
分类号
E21D17/04;E21D23/06
主分类号
E21D17/04
代理机构
代理人
主权项
地址
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