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经营范围
发明名称
Improvements in or relating to glass bases for hermetically sealed envelopes of electric discharge devices
摘要
申请公布号
GB671473(A)
申请公布日期
1952.05.07
申请号
GB19490008904
申请日期
1949.04.01
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
WELCH PETER;RICHARDS MARLAIS
分类号
H01J5/50
主分类号
H01J5/50
代理机构
代理人
主权项
地址
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