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发明名称
Procédé de repérage des signaux sonores enregistrés
摘要
申请公布号
FR950369(A)
申请公布日期
1949.09.26
申请号
FRD950369
申请日期
1947.07.17
申请人
BRITISH ACOUSTIC FILMS LIMITED
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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