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发明名称
Improvements in electrode systems with unsymmetrical conductivity
摘要
申请公布号
GB450393(A)
申请公布日期
1936.07.16
申请号
GB19360010276
申请日期
1936.04.07
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01L21/103;H01L21/108
主分类号
H01L21/103
代理机构
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