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Zeichengebender.Apparat.des.Phonographen. de Maksim page de Motiv Zeichengebender Apparat des Phonographen Quelle Meyers etechnik uniulm de ID meyersbs Lizenz public domain Urheberrecht abgelaufen PDold date username edit summary Jan de Benutzer Denniss no Jul de Benutzer Asb no Jul de Benutzer Asb no Zeichengebender