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发明名称
Improvements in or relating to electric discharge tubes
摘要
申请公布号
GB402214(A)
申请公布日期
1933.11.30
申请号
GB19320025360
申请日期
1932.09.12
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H01J7/18
主分类号
H01J7/18
代理机构
代理人
主权项
地址
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