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经营范围
发明名称
Electron discharge device including an electron emissive electrode having an undulating cross-sectional contour
摘要
申请公布号
USRE30249(E)
申请公布日期
1980.04.01
申请号
US19780901975
申请日期
1978.05.01
申请人
发明人
分类号
H01J43/06
主分类号
H01J43/06
代理机构
代理人
主权项
地址
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