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经营范围
发明名称
Electric discharge, ultra high frequency generating, and switching tube
摘要
申请公布号
US2423858(A)
申请公布日期
1947.07.15
申请号
US19440523634
申请日期
1944.02.24
申请人
ALFRED VANG
发明人
VANG ALFRED
分类号
H01J17/14
主分类号
H01J17/14
代理机构
代理人
主权项
地址
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