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Application filed by Robert UrbanskifiledCriticalRobert Urbanski
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Publication of AT174948BpublicationCriticalpatent/AT174948B/de
AT174948D1951-11-051951-11-05Anordnung zum Schutze der Gleichstromeinrichtungen einer Gleisstrecke gegen die Beeinflussung durch den Triebwechselstrom
AT174948B
(de)