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发明名称
Tube à décharge avec récipient à vide au moins partiellement métallique
摘要
申请公布号
FR843194(A)
申请公布日期
1939.06.27
申请号
FRD843194
申请日期
1938.09.08
申请人
TELEFUNKEN GESELLSCHAFT FU:R DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H01J19/42
主分类号
H01J19/42
代理机构
代理人
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地址
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