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经营范围
发明名称
Incandescent electric lamp
摘要
申请公布号
GB501956(A)
申请公布日期
1939.03.08
申请号
GB19380013756
申请日期
1938.05.09
申请人
THE SINGER MANUFACTURING COMPANY
发明人
分类号
H01K1/46
主分类号
H01K1/46
代理机构
代理人
主权项
地址
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