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经营范围
发明名称
Electric discharge tube
摘要
申请公布号
US2835842(A)
申请公布日期
1958.05.20
申请号
US19520277103
申请日期
1952.03.18
申请人
NORTH AMERICAN PHILIPS COMPANY, INC.
发明人
WITTEVEEN HERMAN ADAM
分类号
H01J19/44
主分类号
H01J19/44
代理机构
代理人
主权项
地址
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