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发明名称
ELEKTRISCHES GERAET MIT IN SERIE GEHEIZTEN ELEKTRONENROEHREN.
摘要
申请公布号
DE1626479(U)
申请公布日期
1951.08.02
申请号
DE1950K003885U
申请日期
1950.12.27
申请人
W. KREFFT A.G.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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