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发明名称
Electron velocity variation device with noise reducing resonator
摘要
申请公布号
US2494721(A)
申请公布日期
1950.01.17
申请号
US19470755444
申请日期
1947.06.18
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
ROBERTSON SLOAN D.
分类号
H01J25/12
主分类号
H01J25/12
代理机构
代理人
主权项
地址
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