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发明名称
Perfectionnements aux compteurs de temps synchrones
摘要
申请公布号
FR845449(A)
申请公布日期
1939.08.23
申请号
FRD845449
申请日期
1938.04.28
申请人
发明人
TROGNEE MARCEL
分类号
G04C11/08
主分类号
G04C11/08
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