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经营范围
发明名称
Discharge tube
摘要
申请公布号
US2021102(A)
申请公布日期
1935.11.12
申请号
US19320590459
申请日期
1932.02.02
申请人
PAUL KAPTEYN
发明人
KAPTEYN PAUL
分类号
H01J21/02
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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