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发明名称
Inverted tetrode vacuum tube voltmeter
摘要
申请公布号
US2534928(A)
申请公布日期
1950.12.19
申请号
US19480023725
申请日期
1948.04.28
申请人
WESTINGHOUSE ELECTRIC CORPORATION
发明人
SCHNEEBERGER ROBERT J.
分类号
G01R15/14;G01R19/00
主分类号
G01R15/14
代理机构
代理人
主权项
地址
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