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发明名称
Procédé de radiophonie permettant de réduire la largeur de la bande de fréquence sans affecter la qualité musicale de l'émission
摘要
申请公布号
FR799320(A)
申请公布日期
1936.06.11
申请号
FRD799320
申请日期
1935.12.14
申请人
发明人
KOOMANS NICOLAAS
分类号
H03C1/60;H04B1/68
主分类号
H03C1/60
代理机构
代理人
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