active 1921-1947, publisher of psychological assessments, American The Psychological Corporation 1921
1930s-1978, manufacturer of uniforms and helmets, England J Compton Sons and Webb Limited 1930 - 1978
active 1925-1998, manufacturer of pharmaceutical and medical supplies, Liverpool Evans Medical Limited 1925 - 1998
1931-1992, typeface & type setting machine maker, British The Monotype Corporation Limited 1936 - 1999
active 1924/6-1967, electrical measuring & scientific instrument maker, London, England, British Cambridge Scientific Instrument Company Limited 1924 - 1967
active 1944-1954, laboratory apparatus & instrument maker, London, England W and J George and Becker Limited 1944 - 1954
active 1948-1969, optical instrument maker (spectroscopes etc.), London, England Hilger and Watts Limited 1948 - 1969
1935-1994, manufacturer of medical instruments, Quincy, Massachusetts, United States Grass Instrument Company 1935
1919-1995, multimedia publisher, educational film makers, Chicago Society for Visual Education Inc. 1919 - 1995
1935-2008, electrical equipment designer and manufacturer: uses Panasonic as brand name, Japan Matsushita Electric Industrial Co., Ltd. 1935 - 2008
1945-1985, manufacturer of electronic equipment (acoustic devices), United Kingdom Dawe Instruments Limited 1945
active 1928-1956, manufacturer of automatic and dispensing machines, London, England British Automatic Company Limited 1928 - 1956
1948-1977, goldsmiths, assayers and photographic chemists, Hendon Johnsons of Hendon Limited 1948 - 1972
1922-1978?, manufacturer of wireless (radio receiver) components and valves, Blackheath, Kent, England, United Kingdom Burndept Limited 1922
1928-1946, camera and photographic equipment manufacturer, Rochester Folmer Graflex Corporation 1928 - 1946
1936-c. 2005, manufacturer of electronic measuring and laboratory equipment, Croydon, England H W Wallace and Company Limited 1936 - 2005
(1839)1919-1972, photographic retailer; pharmacist, London, England Wallace Heaton Limited 1919 - 1972
1945-1978, manufacturer of cathode ray tubes, optic and radiation sensors, England Twentieth Century Electronics Limited 1945 - 1978
1938-c.2000, radio and television manufacturer, Berkshire, England Decca Radio and Television Limited 1938 - 2000
1935-1995, pharmaceuticals manufacturer, Greenford, Middlesex, England, British Glaxo Laboratories Limited 1935
1934-1979, radio and television manufacturer, Chicago Continental Radio and Television Corporation 1934 - 1979
1919- c1965, electrical instrument manufacturer, Weybridge, Surrey Peto Scott Electrical Instruments 1919 - 1965
1925-current (2022), manufacturer of motion picture cameras and lenses, Switzerland Paillard-Bolex 1925
1943-1959, newspaper owners including Sunday Times, newspaper printers, England, British Kemsley Newspapers Limited 1943
1931-1979, recording & consumer electrical/electronic goods manufacturer, United Kingdom Electric and Musical Industries Limited 1931 - 1979
1927-c.1977, electrical domestic products manufacturer, London, England Ormond Engineering Company Limited 1927 - 1977
1905-2000, printer; publisher; playing card manufacturer, Leeds; London, England John Waddington Limited 1922
