G. Panigrahi: PENETRON LAND COLOR DISPLAY SYSTEM, Dept. of Computer Science, University of Illinois, Urbana-Champaign, Illinois, USA (October 1973, pdf, 12MB) Thomson-CSF, Image and Display Tubes 1977 part 2 (pdf, 193MB) data sheets: OME1199E2 - p.216ff OME1269E21 - p.220ff TH8102E20 - p.159ff TH8104E21 - p.165ff Patents U.S. Patent 2,590,018, "Production of Colored Images", Louis Koller and Fred Williams/General Electric, filed 24 October 1950, issued 18 March 1952 U.S. Patent 2,958,002, "Production of Colored Images", Dominic Cusano and Frank Studer/General Electric, filed 29 October 1954, issued 25 October 1960 U.S. Patent 2,827,593, "High Purity Color Information Screen", Louis Koller/General Electric, filed 29 April 1955, issued 18 March 1958 U.S. Patent 2,992,349, "Field Enhanced Luminescent System", Dominic Cusano/General Electric, filed 24 October 1957, issued 11 July 1961 U.S. Patent 4,612,483, "Penetron color display tube with channel plate electron multiplier", Derek Washington/Philips Electronics, filed 22 September 1983, issued 16 September 1986 See also Beam-index tube Chromatron History of television Television technology Vacuum tube displays Early color television