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发明名称
Cathode spacers
摘要
申请公布号
US2928018(A)
申请公布日期
1960.03.08
申请号
US19590825542
申请日期
1959.07.07
申请人
RAYTHEON COMPANY
发明人
WETMORE ARTHUR R.
分类号
H01J23/05;H04B1/10
主分类号
H01J23/05
代理机构
代理人
主权项
地址
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