active 1932-1986, manufacturer of meteorological instruments, United Kingdom Francis Barker and Son (1932) Limited 1932 - 1986
1931-1979, recording & consumer electrical/electronic goods manufacturer, United Kingdom Electric and Musical Industries Limited 1931 - 1979
active 1944-1954, laboratory apparatus & instrument maker, London, England W and J George and Becker Limited 1910 - 1954
c. 1908-c. 1957, manufacturer of photographic film and accessories, England Dufay-Chromex Limited 1930 - 1957
1930-1952, audio, phonographic products and magnetic recording manufacturer, Cleveland, United States Brush Development Company 1930 - 1952
1935-1989, manufacturer of fire & smoke detection equipment & gas cylinders, Colnbrook, England Walter Kidde Company Limited 1935 - 1989
1935-c.1981, television component and vacuum tube manufacturer, Cambridge, England Cathodeon Ltd. 1935 - 1981
active 1935-1960, aircraft component manufacturer, Lancashire, England De Havilland Propellers Limited 1935 - 1960
1932-1997, aerospace and weapons manufacturer, United States, American Hughes Aircraft Company 1932 - 1997
1930-1994, manufacturer of recording equipment, Arlington, United States Ralph Gerbrands Company 1930 - 1994
1935-2015, theatre scenographer; artist; portraitist, active England, Zimbabwean born Sonnabend, Yolanda 1935 - 2015
1929-1934, manufacturer, Saltley Metropolitan-Cammell Carriage, Wagon & Finance Company Ltd. 1929 - 1934
1935-1992, manufacturer of railway signalling equipment, England Westinghouse Brake & Signal Company 1935 - 19922