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经营范围
发明名称
Perfectionnements aux sonnettes électriques fonctionnant sur courant alternatif
摘要
申请公布号
FR696168(A)
申请公布日期
1930.12.27
申请号
FRD696168
申请日期
1930.05.27
申请人
SOCIETE INDUSTRIELLE D'ELECTRICITE ET DE MECANIQUE APPLIQUEE (S. I. E. M. A.)
发明人
分类号
G10K1/064
主分类号
G10K1/064
代理机构
代理人
主权项
地址
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