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发明名称
Procédé et installation de télégraphie et de téléphonie multiplex, en particulier pour ondes très courtes
摘要
申请公布号
FR837756(A)
申请公布日期
1939.02.20
申请号
FRD837756
申请日期
1938.05.09
申请人
发明人
PUNGS LEO
分类号
H04J1/00
主分类号
H04J1/00
代理机构
代理人
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