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发明名称
Appareil automatique de vissage et dévissage d'éléments filetés de fixation de voies ferrées
摘要
申请公布号
FR1520762(A)
申请公布日期
1968.04.12
申请号
FR19670097275
申请日期
1967.03.03
申请人
发明人
POUGET ROBERT
分类号
E01B29/28
主分类号
E01B29/28
代理机构
代理人
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