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发明名称
Electron discharge device
摘要
申请公布号
US2250927(A)
申请公布日期
1941.07.29
申请号
US19390271295
申请日期
1939.05.02
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
DAVISSON CLINTON J.
分类号
H01J31/28;H01J31/30
主分类号
H01J31/28
代理机构
代理人
主权项
地址
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