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发明名称
Method of making an electron tube
摘要
申请公布号
US2791480(A)
申请公布日期
1957.05.07
申请号
US19550520936
申请日期
1955.07.08
申请人
LARSON RICHARD C
发明人
LARSON RICHARD C.
分类号
H01J5/32
主分类号
H01J5/32
代理机构
代理人
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