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经营范围
发明名称
Cathode ray tube
摘要
申请公布号
US2219111(A)
申请公布日期
1940.10.22
申请号
US19380241092
申请日期
1938.11.18
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
NICOLL FREDERICK HERMES
分类号
H01J29/82
主分类号
H01J29/82
代理机构
代理人
主权项
地址
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