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发明名称
MEJORAS INTRODUCIDAS
摘要
申请公布号
ES190037(A2)
申请公布日期
1950.01.01
申请号
ES19370001900
申请日期
1949.10.13
申请人
PHILIPS'GLOEILAMPENFABRIEKEN, N. V.
发明人
分类号
(IPC1-7):B01;B30
主分类号
(IPC1-7):B01
代理机构
代理人
主权项
地址
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