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发明名称
Couloir à section angulaire pour le guidage d'une machine d'extraction le long de la taille, utilisable notamment dans les mines
摘要
申请公布号
FR1226189(A)
申请公布日期
1960.07.08
申请号
FR19590796296
申请日期
1959.06.02
申请人
GEBR. EICKHOFF, MASCHINENFABRIK UND EISENGIESSEREI M. B. H.
发明人
分类号
E21C35/12
主分类号
E21C35/12
代理机构
代理人
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