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发明名称
ELECTRON DISCHARGE DEVICES
摘要
申请公布号
CA471414(A)
申请公布日期
1951.02.06
申请号
CAD471414
申请日期
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
CHARLES NORMAN SMYTH
分类号
主分类号
代理机构
代理人
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