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发明名称
Dispositif d'aération et de ventilation des wagons de chemin de fer, et notamment des voitures-couchettes
摘要
申请公布号
FR700886(A)
申请公布日期
1931.03.09
申请号
FRD700886
申请日期
1930.08.20
申请人
发明人
DEVEAUX ERNEST
分类号
B61D27/00
主分类号
B61D27/00
代理机构
代理人
主权项
地址
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