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发明名称
Film sonore
摘要
申请公布号
FR695121(A)
申请公布日期
1930.12.11
申请号
FRD695121
申请日期
1930.05.06
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
主权项
地址
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