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经营范围
发明名称
Tube structure
摘要
申请公布号
US2109274(A)
申请公布日期
1938.02.22
申请号
US19350050487
申请日期
1935.11.19
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
NICLASSEN HANS
分类号
H01J29/87
主分类号
H01J29/87
代理机构
代理人
主权项
地址
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