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发明名称
Système de régulation notamment pour chemins de fer
摘要
申请公布号
FR982690(A)
申请公布日期
1951.06.13
申请号
FRD982690
申请日期
1949.01.21
申请人
LE MATERIEL TELEPHONIQUE
发明人
LEFEVRE MICHEL
分类号
B61L25/04
主分类号
B61L25/04
代理机构
代理人
主权项
地址
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