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发明名称
Perfectionnements aux tubes à modulation de vitesse à chanip large
摘要
申请公布号
FR1089971(A)
申请公布日期
1955.03.25
申请号
FRD1089971
申请日期
1953.06.12
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J25/32
主分类号
H01J25/32
代理机构
代理人
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