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发明名称
Cathode ray device
摘要
申请公布号
US2295530(A)
申请公布日期
1942.09.15
申请号
US19400325345
申请日期
1940.03.22
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GRAY FRANK
分类号
H01J29/52
主分类号
H01J29/52
代理机构
代理人
主权项
地址
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