Rowntree
1862 - 1988
Taylor, Taylor and Hobson Limited
1886 - 1924
Royal Ediswan
1883 - 1928
Telegraph Construction & Maintenance Co. Limited
1864 - 1959
Standard Telephones and Cables PLC
1883 - 1991
White, James
1824 - 1884
Matisa Ltd
1945
Neilson Reid and Company
1898 - 1903
Montanus
1920 - 1978
Durbin, Leslie
1913 - 2005
Midland Railway Carriage and Wagon Company Limited
1845 - 1902
Schäffer, Bernhard
1823 - 1877
Eagle Engineering Co
1907 - 1972
Dutton and Company
1888 - 1899
Amplion Limited
1920 - 1939
Scophony Limited
1930 - 1949
Scottish Instruments Limited
1958 - 1983
Pye Limited
1896 - 1967
Damard Lacquer Company Limited
1910 - 1927
Broadcast Television Systems Incorporated
1986 - 1995
Hivac Limited
1920 - 1935
Heurtier et Cie
1939 - 1981
Arkwright, Sir Richard
1732 - 1792
Yorkshire Engine Company
1865 - 1965
Beard, Robert Royou
1856 - 1932
Budenberg, Christian Friedrich
1815 - 1883
Combined Optical Industries Limited
1936 - 1999
Peto Scott Electrical Instruments
1919 - 1965
G.A. Krauss
1895 - 1991
Armstrong, Whitworth and Company
1897 - 1927
Daniel Adamson & Co
1851 - 1964
Arvin Industries Incorporated
1950 - 2000
Brush Development Company
1930 - 1952
True-Vue Company
1931 - 1951
Holtzapffel and Company
1827 - 1928
Hudson's
1837 - 1935
Samuel Jones and Company Limited
1868 - 1982
Draeger
1889
Riken Kōgaku Kōgyō K.K.
1967 - 1963
Henry Hughes and Son Limited
1828 - 1947
Alexander Morton and Company
1875 - 1914
Montague Radio Inventions and Development Co., Ltd.
1929 - 1972
General Radio Company
1915 - 2001
Cumana
1976 - 1995
Uher
1953 - 1974
Grampian Reproducers Ltd.
1950 - 1975
Cathodeon Ltd.
1935 - 1981
Protona GmbH
1952 - 1967
Amplifex Radio Corporation
1920 - 1928
Fernseh
1929 - 1986