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经营范围
发明名称
Improvements in or relating to electric discharge tubes
摘要
申请公布号
GB560490(A)
申请公布日期
1944.04.06
申请号
GB19420001619
申请日期
1942.02.06
申请人
PHILIPS LAMPS LIMITED
发明人
分类号
H01J29/60;H01J31/04
主分类号
H01J29/60
代理机构
代理人
主权项
地址
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