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发明名称
Improvements in or relating to chucks or holders
摘要
申请公布号
GB308202(A)
申请公布日期
1930.01.09
申请号
GB19290003705
申请日期
1929.02.04
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H02G3/32
主分类号
H02G3/32
代理机构
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