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经营范围
发明名称
Compensated phototube amplifier
摘要
申请公布号
US2794850(A)
申请公布日期
1957.06.04
申请号
US19510213135
申请日期
1951.02.28
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
WORTHEN GEORGE B.
分类号
H03F1/28;H04B15/02;H04N1/407
主分类号
H03F1/28
代理机构
代理人
主权项
地址
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