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经营范围
发明名称
Improvements in or relating to electric discharge-tube installations
摘要
申请公布号
GB412471(A)
申请公布日期
1934.06.28
申请号
GB19330029086
申请日期
1933.10.20
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H02M7/06
主分类号
H02M7/06
代理机构
代理人
主权项
地址
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