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发明名称
Direct current inserting device
摘要
申请公布号
US2244240(A)
申请公布日期
1941.06.03
申请号
US19380247163
申请日期
1938.12.22
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
BLUMLEIN ALAN DOWER
分类号
H04N5/16;H04N5/18
主分类号
H04N5/16
代理机构
代理人
主权项
地址
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