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发明名称
Vacuum tube voltmeter circuit
摘要
申请公布号
US2294065(A)
申请公布日期
1942.08.25
申请号
US19390302483
申请日期
1939.11.02
申请人
RADIO CORPORATION
发明人
ANDERSON EARL I.
分类号
G01R19/22
主分类号
G01R19/22
代理机构
代理人
主权项
地址
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