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经营范围
发明名称
Improvements in or relating to signal transmitting systems more particularly for musical or like programmes
摘要
申请公布号
GB366317(A)
申请公布日期
1932.02.04
申请号
GB19310007000
申请日期
1931.03.06
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;JOHN EDWARD COLLYER
发明人
分类号
H04H20/81
主分类号
H04H20/81
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