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经营范围
发明名称
Improvements in vacuum tight concentric electric leads
摘要
申请公布号
GB517152(A)
申请公布日期
1940.01.22
申请号
GB19380024769
申请日期
1938.08.23
申请人
THE GENERAL ELECTRIC COMPANY LIMITED
发明人
分类号
C03C27/02
主分类号
C03C27/02
代理机构
代理人
主权项
地址
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