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经营范围
发明名称
Disque d'enregistrement phonographique
摘要
申请公布号
FR984323(A)
申请公布日期
1951.07.04
申请号
FRD984323
申请日期
1949.04.08
申请人
COLUMBIA BROADCASTING SYSTEM INC.
发明人
分类号
G11B3/70
主分类号
G11B3/70
代理机构
代理人
主权项
地址
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