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发明名称
Strebausbau
摘要
申请公布号
DE1209980(B)
申请公布日期
1966.02.03
申请号
DE1964D044700
申请日期
1964.06.16
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
BOLTON DOUGLAS HERBERT HEWLETT;POTTS MICHAEL CHARLES;PAWLING FRANK
分类号
E21D23/14
主分类号
E21D23/14
代理机构
代理人
主权项
地址
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