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Application filed by C H F Mueller FafiledCriticalC H F Mueller Fa
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Publication of AT109642BpublicationCriticalpatent/AT109642B/de
AT109642D1925-08-211926-08-20Vorrichtung zur Erzeugung einer gerichteten, regelbaren Vorspannung an der Hilfselektrode einer Entladungsröhre.
AT109642B
(de)