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发明名称
Cathode ray device
摘要
申请公布号
US2217197(A)
申请公布日期
1940.10.08
申请号
US19360118277
申请日期
1936.12.30
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
DAVISSON CLINTON J.
分类号
H01J29/48;H01J29/52
主分类号
H01J29/48
代理机构
代理人
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