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经营范围
发明名称
Improvements in or relating to cathode ray tubes
摘要
申请公布号
GB391360(A)
申请公布日期
1933.04.27
申请号
GB19320024118
申请日期
1932.08.29
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H01J29/48;H01J29/52
主分类号
H01J29/48
代理机构
代理人
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地址
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