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发明名称
Thermionic valve amplifier circuits
摘要
申请公布号
US2173914(A)
申请公布日期
1939.09.26
申请号
US19370182651
申请日期
1937.12.31
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
PERCIVAL WILLIAM SPENCER
分类号
H03F1/50
主分类号
H03F1/50
代理机构
代理人
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地址
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