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经营范围
发明名称
Electron tube
摘要
申请公布号
US3038098(A)
申请公布日期
1962.06.05
申请号
US19590827110
申请日期
1959.07.14
申请人
SYLVANIA ELECTRIC PRODUCTS, INC.
发明人
O'NEILL GEORGE D.
分类号
H01J19/74
主分类号
H01J19/74
代理机构
代理人
主权项
地址
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