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发明名称
Systèmes électriques à variation continue de la fréquence
摘要
申请公布号
FR53261(E)
申请公布日期
1945.10.03
申请号
FRD53261
申请日期
1943.10.06
申请人
SOCIETE INDEPENDANTE DE TELEGRAPHIE SANS FIL
发明人
分类号
H03B21/04
主分类号
H03B21/04
代理机构
代理人
主权项
地址
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