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经营范围
发明名称
Improvements in sealed envelopes of quartz or like material
摘要
申请公布号
GB578042(A)
申请公布日期
1946.06.13
申请号
GB19410014672
申请日期
1941.11.14
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;VICTOR JAMES FRANCIS;ERIC KETTLEWELL
发明人
分类号
H01J5/24
主分类号
H01J5/24
代理机构
代理人
主权项
地址
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