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发明名称
Perfectionnement aux dispositifs donnant la base de temps dans les observations oscillographiques et analogues
摘要
申请公布号
FR772206(A)
申请公布日期
1934.10.25
申请号
FRD772206
申请日期
1934.04.23
申请人
A. C. COSSOR LIMITED
发明人
分类号
H03K4/12
主分类号
H03K4/12
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代理人
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