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经营范围
发明名称
Perfectionnements aux systèmes de télévision aérienne
摘要
申请公布号
FR845777(A)
申请公布日期
1939.09.01
申请号
FRD845777
申请日期
1938.05.06
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H04N5/222
主分类号
H04N5/222
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