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经营范围
发明名称
Lampe électronique
摘要
申请公布号
FR761660(A)
申请公布日期
1934.03.24
申请号
FRD761660
申请日期
1933.09.20
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H01J21/12
主分类号
H01J21/12
代理机构
代理人
主权项
地址
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