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发明名称
Système de signalisation optique
摘要
申请公布号
FR721444(A)
申请公布日期
1932.03.03
申请号
FRD721444
申请日期
1931.06.02
申请人
发明人
DANNEVIG LARS
分类号
G08B5/28
主分类号
G08B5/28
代理机构
代理人
主权项
地址
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