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发明名称
Gerät zur Herstellung von Glühkathoden.
摘要
申请公布号
AT135875(B)
申请公布日期
1933.12.11
申请号
ATD135875
申请日期
1932.05.17
申请人
ELEKTRISCHE GLUEHLAMPENFABRIKEN JOH. KREMENEZKY A. G.
发明人
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