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发明名称
System for amplification of direct voltages
摘要
申请公布号
US2226288(A)
申请公布日期
1940.12.24
申请号
US19370144968
申请日期
1937.05.26
申请人
GENERAL ELECTRIC COMPANY
发明人
PIEPLOW HANS WERNER
分类号
H03F3/40
主分类号
H03F3/40
代理机构
代理人
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地址
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