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经营范围
发明名称
Improvements in or relating to electronic valve amplifiers
摘要
申请公布号
GB839363(A)
申请公布日期
1960.06.29
申请号
GB19550028569
申请日期
1955.10.06
申请人
THE DECCA RECORD COMPANY LIMITED
发明人
CLARK THOMAS GORDON
分类号
H03F3/44
主分类号
H03F3/44
代理机构
代理人
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地址
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