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经营范围
发明名称
Vacuum discharge tube
摘要
申请公布号
US2880351(A)
申请公布日期
1959.03.31
申请号
US19540408154
申请日期
1954.02.04
申请人
NORTH AMERICAN PHILIPS COMPANY, INC.
发明人
WARMOLTZ NICOLAAS
分类号
H01J21/10
主分类号
H01J21/10
代理机构
代理人
主权项
地址
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