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发明名称
Relais de sécurité instantané pour feu à occultations de phare ou balise
摘要
申请公布号
FR990297(A)
申请公布日期
1951.09.19
申请号
FRD990297
申请日期
1949.05.04
申请人
发明人
FRANCOIS JEAN
分类号
G08B5/38;H05B39/10
主分类号
G08B5/38
代理机构
代理人
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