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经营范围
发明名称
Improvements in or relating to devices comprising an armature arranged between pole-pieces
摘要
申请公布号
GB441747(A)
申请公布日期
1936.01.24
申请号
GB19350013696
申请日期
1935.05.09
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H04R11/00;H04R11/08
主分类号
H04R11/00
代理机构
代理人
主权项
地址
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