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发明名称
Perfectionnements aux amplificateurs à décharge électronique
摘要
申请公布号
FR699781(A)
申请公布日期
1931.02.19
申请号
FRD699781
申请日期
1929.11.26
申请人
发明人
CARPENTER RUPERT EVAN HOWARD
分类号
H03F3/28;H03F3/32
主分类号
H03F3/28
代理机构
代理人
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