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经营范围
发明名称
Improvements in or relating to capless electric incandescent lamps or discharge tubes
摘要
申请公布号
GB381837(A)
申请公布日期
1932.10.13
申请号
GB19320006319
申请日期
1932.03.02
申请人
N. V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
分类号
H01J9/40;H01K1/44
主分类号
H01J9/40
代理机构
代理人
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地址
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