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发明名称
Perfectionnements aux appareils enregistreurs de signaux pour chemins de fer
摘要
申请公布号
FR51312(E)
申请公布日期
1942.04.15
申请号
FRD51312
申请日期
1940.11.13
申请人
ATELIERS VAUCANSON
发明人
分类号
B61L3/00
主分类号
B61L3/00
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代理人
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