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发明名称
Transconductance tester
摘要
申请公布号
US2555368(A)
申请公布日期
1951.06.05
申请号
US19460658717
申请日期
1946.04.01
申请人
PHILPOTT LA VERNE R
发明人
PHILPOTT LA VERNE R.
分类号
G01R31/25
主分类号
G01R31/25
代理机构
代理人
主权项
地址
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