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发明名称
SOUND PICTURE RECORDING SYSTEM
摘要
申请公布号
CA325498(A)
申请公布日期
1932.08.30
申请号
CAD325498
申请日期
申请人
THE CANADIAN WESTINGHOUSE COMPANY
发明人
VLADIMIR K. ZWORYKIN
分类号
主分类号
代理机构
代理人
主权项
地址
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