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发明名称
KALTKATHODEN UND VERFAHREN ZU IHRER HERSTELLUNG
摘要
申请公布号
DE2511816(B2)
申请公布日期
1977.03.10
申请号
DE19752511816
申请日期
1975.03.18
申请人
发明人
分类号
H01J1/308;(IPC1-7):H01J1/30
主分类号
H01J1/308
代理机构
代理人
主权项
地址
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