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发明名称
Portable talking motion picture apparatus
摘要
申请公布号
US2031832(A)
申请公布日期
1936.02.25
申请号
US19320592453
申请日期
1932.02.12
申请人
RADIO CORPORATION OF AMERICA
发明人
HOLDEN HAROLD C.
分类号
G03B31/02
主分类号
G03B31/02
代理机构
代理人
主权项
地址
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