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发明名称
Dispositif de commande d'avertisseurs sonores actionnés par un fluide gazeux
摘要
申请公布号
FR841604(A)
申请公布日期
1939.05.24
申请号
FRD841604
申请日期
1938.01.27
申请人
SONABEL
发明人
分类号
G10K9/18
主分类号
G10K9/18
代理机构
代理人
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地址
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