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发明名称
Einrichtung zum Regeln der Vergroesserung bei einer elektromagnetischen, elektronenoptischen Vorrichtung
摘要
申请公布号
DE918649(C)
申请公布日期
1954.09.30
申请号
DE1953N006863
申请日期
1953.03.08
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
FRANKEN JAN CAREL;SCHAGEN PIETER
分类号
H01J29/66
主分类号
H01J29/66
代理机构
代理人
主权项
地址
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