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发明名称
RUECKVORRICHTUNG FUER EIN STREBAUSBAUELEMENT IN UNTERTAEGIGEN GRUBENBETRIEBEN
摘要
申请公布号
DE3438692(A1)
申请公布日期
1985.05.09
申请号
DE19843438692
申请日期
1984.10.22
申请人
DOBSON PARK INDUSTRIES PLC, COLWICK, NOTTINGHAM, GB
发明人
ARCHELAIUS, DAWSON ALLEN, LEYLAND,PRESTON, LANCASHIRE, GB
分类号
E21D23/08;(IPC1-7):E21D23/08
主分类号
E21D23/08
代理机构
代理人
主权项
地址
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