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发明名称
Vakuumgefaess, in dem sowohl Kathoden- als auch Kanalstrahlen erzeugt werden
摘要
申请公布号
DE661337(C)
申请公布日期
1938.06.16
申请号
DE1931H128892D
申请日期
1931.10.09
申请人
LUDWIG HERRMANN;WILLY LIST
发明人
分类号
H01J33/00
主分类号
H01J33/00
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代理人
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