1948-1992, railway company regional authority, United Kingdom British Railways, Western Region 1948 - 1992
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
1950-2000, manufacturer car parts, electronics, consumer goods, Indianapolis Arvin Industries Incorporated 1950 - 2000
c.1950-c.1975, public address equipment manufacturer, Middlesex, England Grampian Reproducers Ltd. 1950 - 1975
1947-1990s; aircraft maintenance, manufacturer of electronic equipment; Haddenham, Buckinghamshire, England Airtech Ltd 1947 - 1999
1944; railway employee, railway engineer, railway engineering manager, railway company director Rollin, David 1944 - 2021
active 1948-1969, optical instrument maker (spectroscopes etc.), London, England Hilger and Watts Limited 1948 - 1969
1948-1977, goldsmiths, assayers and photographic chemists, Hendon Johnsons of Hendon Limited 1948 - 1972