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发明名称
Apparatus and method for testing electronic vacuum tube amplifiers
摘要
申请公布号
US2784372(A)
申请公布日期
1957.03.05
申请号
US19550489021
申请日期
1955.02.18
申请人
BRAMSEN EDWARD A
发明人
BRAMSEN EDWARD A.
分类号
G01R31/25
主分类号
G01R31/25
代理机构
代理人
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地址
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