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发明名称
Pendule électro-magnétique
摘要
申请公布号
FR747512(A)
申请公布日期
1933.06.19
申请号
FRD747512
申请日期
1932.12.14
申请人
发明人
COCQ JEAN DE
分类号
G04C3/06
主分类号
G04C3/06
代理机构
代理人
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