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发明名称
Combination photographic and magnetic sound film picture projector
摘要
申请公布号
US2605364(A)
申请公布日期
1952.07.29
申请号
US19490124470
申请日期
1949.10.29
申请人
RADIO CORPORATION OF AMERICA
发明人
MASTERSON EARL E.
分类号
G11B15/34
主分类号
G11B15/34
代理机构
代理人
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