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经营范围
发明名称
Improvements in circuits including electric discharge devices
摘要
申请公布号
GB409461(A)
申请公布日期
1934.05.03
申请号
GB19330000764
申请日期
1933.01.09
申请人
RADIO RESEARCH LABORATORIES, INC.
发明人
分类号
H03F1/08
主分类号
H03F1/08
代理机构
代理人
主权项
地址
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