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发明名称
Electron discharge tube testing circuit
摘要
申请公布号
US2947936(A)
申请公布日期
1960.08.02
申请号
US19570659269
申请日期
1957.05.15
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
STONE ELMER O.
分类号
G01R31/25;H01J9/42
主分类号
G01R31/25
代理机构
代理人
主权项
地址
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