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发明名称
Verfahren zur Herstellung von Gluehkathoden
摘要
申请公布号
DE540618(C)
申请公布日期
1932.04.26
申请号
DE1928T035253D
申请日期
1928.06.10
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
SCHROETER DR. FRITZ
分类号
H01J9/04
主分类号
H01J9/04
代理机构
代理人
主权项
地址
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