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发明名称
Procédé pour la transmission de signaux électriques
摘要
申请公布号
FR872309(A)
申请公布日期
1942.06.04
申请号
FRD872309
申请日期
1941.05.20
申请人
FERNSEH G.M.B.H.
发明人
分类号
H03F1/33;H03G11/00;H04N7/12
主分类号
H03F1/33
代理机构
代理人
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地址
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