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发明名称
Electron tube
摘要
申请公布号
US2944180(A)
申请公布日期
1960.07.05
申请号
US19590808061
申请日期
1959.04.22
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
WHEELER WILLIAM R.
分类号
H01J19/40
主分类号
H01J19/40
代理机构
代理人
主权项
地址
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