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发明名称
Dispositif de commande automatiquedes barrières de passages à niveau
摘要
申请公布号
FR704211(A)
申请公布日期
1931.05.15
申请号
FRD704211
申请日期
1930.10.22
申请人
发明人
GARNIER MICHEL
分类号
B61L29/22
主分类号
B61L29/22
代理机构
代理人
主权项
地址
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