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发明名称
KONTROLLEINRICHTUNG ZUR UEBERWACHUNG DES BETRIEBSZUSTANDES VON GLUEHLAMPEN.
摘要
申请公布号
DE1750092(U)
申请公布日期
1957.08.08
申请号
DE195700E9752U
申请日期
1957.04.30
申请人
ELEKTRO-ROEHREN G.M.B.H.
发明人
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主分类号
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