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发明名称
Avertisseur silencieux
摘要
申请公布号
FR734379(A)
申请公布日期
1932.10.21
申请号
FRD734379
申请日期
1932.03.30
申请人
发明人
GROTHE ERNST
分类号
G08B5/02
主分类号
G08B5/02
代理机构
代理人
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