Tessar (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Tessar" in English language version.

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archive.org

cjs-classic-cameras.co.uk

  • "Werra". CJ's Classic Camera Collection. Retrieved 18 May 2023.

espacenet.com

worldwide.espacenet.com

  • DE Patent 56109C, Paul Rudolph, "Photographisches Doppelobjectiv", published May 20, 1891, assigned to Carl Zeiss AG 
  • GB Patent 189322607A, H. Dennis Taylor, "A Simplified Form and Improved Type of Photographic Lens", published October 6, 1894, assigned to Taylor, Taylor & Hobson 
  • GB Patent 189516640A, Hugh Lancelot Aldis, "Improvements in Photographic Lenses", published July 4, 1896, assigned to J.H. Dallmeyer, Ltd. 
  • DE Patent 134408C, Paul Rudolph, "Sphärisch und chromatisch korrigirtes Objektiv mit anastigmatischer Bildebenung", published October 10, 1902, assigned to Carl Zeiss Jena 
  • DE Patent 142294C, Paul Rudolph, "Sphärisch, chromatisch und astigmatisch korrigiertes Objectiv aus vier, durch die Blende in zwei Gruppen geteilten Linsen", published July 4, 1903, assigned to Carl Zeiss Jena 
  • DE Patent 603325C, Ernst Wandersleb & Willy Merté, "Dreiteiliges photographisches Objektiv", published September 29, 1934, assigned to Carl Zeiss Jena 
  • DE Patent 451194C, Wandersleb & Merté, "Sphaerisch, komatisch, chromatisch und astigmatisch korrigierte Lichtbildlinse", published October 22, 1927 
  • GB Patent 191329637A, John Stuart & John W. Hasselkus, "Improvements in Lenses for use in Photography and Projection, or the like.", published October 22, 1914 
  • US Patent 1122895A, Charles Henri Florian, "Objective", published December 29, 1914, assigned to Berthiot 
  • DE Patent 343086C, "Unsymmetrisches Objektiv", published October 28, 1921, assigned to E. Leitz 
  • US Patent 2084714A, Albrecht Tronnier, "Unsymmetrical photographic objective", published June 22, 1937, assigned to Jos. Schenider & Co. 
  • US Patent 2573511A, Albrecht Tronnier, "Four-lens photographic objective", published October 30, 1951, assigned to Voigtländer & Sohn AG 
  • US Patent 721240A, Paul Rudolph, "Photographic Objective", published February 24, 1903, assigned to Carl Zeiss Jena 

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