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发明名称
Dispositif de lecture de son pour films cinématographiques
摘要
申请公布号
FR937269(A)
申请公布日期
1948.08.12
申请号
FRD937269
申请日期
1946.12.06
申请人
发明人
BUSSIERE JEAN
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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