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经营范围
发明名称
Velocity-modulation electron tube apparatus
摘要
申请公布号
GB813106(A)
申请公布日期
1959.05.06
申请号
GB19570033623
申请日期
1955.08.10
申请人
VARIAN ASSOCIATES
发明人
NELSON RICHARD BURTON
分类号
H01J25/06
主分类号
H01J25/06
代理机构
代理人
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地址
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