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发明名称
Improvements in electrical phase-shifting or frequency changing arrangements
摘要
申请公布号
GB729112(A)
申请公布日期
1955.05.04
申请号
GB19500004757
申请日期
1950.02.24
申请人
ELECTRIC MUSICAL INDUSTRIES LIMITED
发明人
LEYTON ERIC MCPHAIL
分类号
H04N3/36
主分类号
H04N3/36
代理机构
代理人
主权项
地址
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