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发明名称
Dispositif d'avertissement sonore à intensité croissante en fonction du temps
摘要
申请公布号
FR1418134(A)
申请公布日期
1965.11.19
申请号
FR19640989557
申请日期
1964.09.28
申请人
发明人
MERLIN ANDRE, EMILE, CHARLES
分类号
G08B3/10;H04M19/04
主分类号
G08B3/10
代理机构
代理人
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地址
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