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发明名称
Internal shielding arrangements for electron discharge devices
摘要
申请公布号
GB655671(A)
申请公布日期
1951.08.01
申请号
GB19470022080
申请日期
1947.08.08
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
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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