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发明名称
Indirekt geheizte punktfoermige Hochemissonskathode fuer Elektronenstrahlroehren
摘要
申请公布号
DE719228(C)
申请公布日期
1942.04.01
申请号
DE1936S121166D
申请日期
1936.01.16
申请人
SIEMENS & HALSKE AG.
发明人
WALDSCHMIDT DR. PHIL. ERNST
分类号
H01J1/28;H01J29/48
主分类号
H01J1/28
代理机构
代理人
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地址
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