Röhrenverstärker (German Wikipedia)

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

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elektor.de

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  • Patent US2710312A: Ultra linear amplifiers. Angemeldet am 20. Mai 1952, veröffentlicht am 7. Juni 1955, Anmelder: Acro Products Company, Erfinder: David Hafler, Herbert I. Keroes.
  • Patent GB496883A: Improvements in or relating to thermionic valve amplifying circuits. Angemeldet am 5. Juni 1937, veröffentlicht am 5. Dezember 1938, Erfinder: Alan Dower Blumlein.

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