(1839)1919-1972, photographic retailer; pharmacist, London, England Wallace Heaton Limited 1919 - 1972
active 1925-1998, manufacturer of pharmaceutical and medical supplies, Liverpool Evans Medical Limited 1925 - 1998
active 1932-1986, manufacturer of meteorological instruments, United Kingdom Francis Barker and Son (1932) Limited 1932 - 1986
1926-late 1960s, photographic advertising agency, England Photographic Advertising Limited 1926 - 1969
1922-1964, manufacturer and supplier of razors and washing machines, London, England Rolls Razor Limited 1922 - 1964
1927-1971, manufacturer of dyestuffs, Blackley, Manchester, England Imperial Chemical Industries Limited, Dyestuffs Division 1927 - 1971
1931-1979, recording & consumer electrical/electronic goods manufacturer, United Kingdom Electric and Musical Industries Limited 1931 - 1979
active about 1920-1935, manufacturer of radio valves, Harrow, Middlesex, England, British Hivac Limited 1920 - 1935
active 1944-1954, laboratory apparatus & instrument maker, London, England W and J George and Becker Limited 1910 - 1954
1936-c. 2005, manufacturer of electronic measuring and laboratory equipment, Croydon, England H W Wallace and Company Limited 1936 - 2005
1936-1999, plastics manufacturer (optics), London, Slough; England, British Combined Optical Industries Limited 1936 - 1999
1919- c1965, electrical instrument manufacturer, Weybridge, Surrey Peto Scott Electrical Instruments 1919 - 1965
1852-1922, electrical engineer; university teacher, Austrian; British Kapp, Gisbert Johann Eduard 1922 - 1922
c. 1908-c. 1957, manufacturer of photographic film and accessories, England Dufay-Chromex Limited 1930 - 1957
active 1920-1964, aircraft manufacturer, Hatfield, Hertfordshire, England, British De Havilland Aircraft Company Limited 1920 - 1964
1930-1952, audio, phonographic products and magnetic recording manufacturer, Cleveland, United States Brush Development Company 1930 - 1952
active 1927-2008, physican; orthopaedic surgeon; designer of artificial limbs, Indian Sethi, Pramod Karan 1927 - 2008
1935-1989, manufacturer of fire & smoke detection equipment & gas cylinders, Colnbrook, England Walter Kidde Company Limited 1935 - 1989