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发明名称
Dispositif d'extraction, utilisable notamment dans les mines
摘要
申请公布号
FR1176589(A)
申请公布日期
1959.04.13
申请号
FRD1176589
申请日期
1957.06.07
申请人
GEBR. EICKHOFF, MASCHINENFABRIK UND EISENGIESSEREI M.B.H.
发明人
分类号
E21C27/02;E21C35/12
主分类号
E21C27/02
代理机构
代理人
主权项
地址
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