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经营范围
发明名称
Electrical signal amplifiers
摘要
申请公布号
US2832848(A)
申请公布日期
1958.04.29
申请号
US19570634569
申请日期
1957.01.16
申请人
NEFF GLYN A
发明人
NEFF GLYN A.
分类号
H03F3/40
主分类号
H03F3/40
代理机构
代理人
主权项
地址
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