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发明名称
PORTABLE TALKING MOTION PICTURE APPARATUS
摘要
申请公布号
IE10598(L)
申请公布日期
1930.02.08
申请号
IED10598
申请日期
1928.11.29
申请人
ELECTRICAL RESEARCH PRODUCTS
发明人
分类号
G03B17/00;(IPC1-7):G03B17/00
主分类号
G03B17/00
代理机构
代理人
主权项
地址
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