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经营范围
发明名称
Improvements in or relating to apparatus for testing electrical characteristics of electron tubes
摘要
申请公布号
GB904154(A)
申请公布日期
1962.08.22
申请号
GB19600005408
申请日期
1960.02.16
申请人
DAYSTROM, INCORPORATED
发明人
MACARA JOHN STUART
分类号
G01R31/25
主分类号
G01R31/25
代理机构
代理人
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地址
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