Telefon (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Telefon" in German language version.

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books.google.com

  • The Telephone. In: The Year-Book of Facts in Science and Art. Band [1844]. David Bogue, London 1845, S. 55 (online).

br.de

espacenet.com

worldwide.espacenet.com

  • Patent US597062A: Calling Device for Telephone-Exchanges. Angemeldet am 20. August 1896, veröffentlicht am 11. Januar 1898, Anmelder: Strowger Automatic Telephone Exchange, Erfinder: Alexander E. Keith, John Erickson, Charles J. Erickson.

gettyimages.de

guggenheim.org

museumsstiftung.de

onb.ac.at

anno.onb.ac.at

radiomuseum.org

redirecter.toolforge.org

  • Bedienungsanleitung T-Sinus 710 Komfort. Stand: 11.2001. (PDF; 4,76 MB) Deutsche Telekom, November 2001, archiviert vom Original (nicht mehr online verfügbar) am 31. Januar 2015; abgerufen am 16. November 2013.

teltarif.de

web.archive.org

  • Bedienungsanleitung T-Sinus 710 Komfort. Stand: 11.2001. (PDF; 4,76 MB) Deutsche Telekom, November 2001, archiviert vom Original (nicht mehr online verfügbar) am 31. Januar 2015; abgerufen am 16. November 2013.

youtube.com