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发明名称
ELEKTRONENROEHRE ZUR SPANNUNGSANZEIGE, INSBESONDERE ABSTIMMANZEIGEROEHRE FUER FUNKEMPFAENGER.
摘要
申请公布号
DE1738284(U)
申请公布日期
1957.01.24
申请号
DE195600P9986U
申请日期
1956.05.29
申请人
PHILIPS PATENTVERWALTUNG G. M. B. H.
发明人
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