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发明名称
Electronic power tube tester
摘要
申请公布号
US2440287(A)
申请公布日期
1948.04.27
申请号
US19450607074
申请日期
1945.07.25
申请人
ORAVETZ ALBERT S
发明人
ORAVETZ ALBERT S.
分类号
G01R31/24
主分类号
G01R31/24
代理机构
代理人
主权项
地址
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