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经营范围
发明名称
Improvements in or relating to cathode ray and so-called braun tubes
摘要
申请公布号
GB403818(A)
申请公布日期
1934.01.04
申请号
GB19330001818
申请日期
1933.01.19
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H01J29/48
主分类号
H01J29/48
代理机构
代理人
主权项
地址
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