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发明名称
Verfahren zur Herstellung schwarzer UEberzuege auf Metallteilen von Elektronenroehren
摘要
申请公布号
DE726048(C)
申请公布日期
1942.10.06
申请号
DE1938S130249D
申请日期
1938.01.04
申请人
SIEMENS & HALSKE AG.
发明人
BERGKAMPF DR.-ING. ERICH SCHWARZ VON
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
主权项
地址
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