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发明名称
Changeur de fréquence
摘要
申请公布号
FR1175190(A)
申请公布日期
1959.03.20
申请号
FRD1175190
申请日期
1957.05.15
申请人
THE GENERAL ELECTRIC COMPANY LIMITED
发明人
分类号
H03D9/06
主分类号
H03D9/06
代理机构
代理人
主权项
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