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发明名称
Avertisseur de sécurité pour portes d'appartements
摘要
申请公布号
FR686979(A)
申请公布日期
1930.08.01
申请号
FRD686979
申请日期
1929.12.20
申请人
发明人
GOURDAIN EUGENE
分类号
G08B13/08
主分类号
G08B13/08
代理机构
代理人
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