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经营范围
发明名称
Improvements in the control of radio receivers
摘要
申请公布号
GB510895(A)
申请公布日期
1939.08.10
申请号
GB19380004356
申请日期
1938.02.11
申请人
RADIO GRAMOPHONE DEVELOPMENT COMPANY, LIMITED;WILLIAM REDSHAW PARKINSON
发明人
分类号
H03J5/14
主分类号
H03J5/14
代理机构
代理人
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