active 1921-1947, publisher of psychological assessments, American The Psychological Corporation 1921
1904-1973, supplier of wholesale chemicals & drugs, England, British British Drug Houses Limited 1904 - 1973
1930s-1978, manufacturer of uniforms and helmets, England J Compton Sons and Webb Limited 1930 - 1978
1896-1947, scientific instrument and radio manufacturer, Cambridge W G Pye and Company Limited 1896 - 1947
active 1897-1968, laboratory apparatus and instrument maker, London, England Baird and Tatlock (London) Limited 1897 - 2012
active 1925-1998, manufacturer of pharmaceutical and medical supplies, Liverpool Evans Medical Limited 1925 - 1998
(1839)1919-1972, photographic retailer; pharmacist, London, England Wallace Heaton Limited 1919 - 1972
1919-1995, multimedia publisher, educational film makers, Chicago Society for Visual Education Inc. 1919 - 1995
active 1924/6-1967, electrical measuring & scientific instrument maker, London, England, British Cambridge Scientific Instrument Company Limited 1924 - 1967
active 1900-1960s, manufacturer of electrical measuring equipment, Hendon, England Everett, Edgcumbe and Company Limited 1905 - 1968
1898-1931, recording company; gramophone and radio manufacturer, British Gramophone Company Limited 1898 - 1931
1917-1958, manufacturer of projectors and cine equipment, Leeds, United Kingdom Kalee Limited 1917 - 1958
active 1898-1968, compressor/engineering product manufacture, High Wycombe, Buckinghamshire, British Broom and Wade Limited 1898 - 1968
1913-1947, scientific instrument maker, Glasgow, Scotland & London, England Kelvin, Bottomley & Baird Limited 1913 - 1947
1891-active 1940s, silversmith; medalmaker, England Alexander Clark Manufacturing Company Limited 1912
1895-c.1950, gas and laboratory equipment manufacturer, Warrington, Cheshire, England Fletcher Russell and Company Limited 1895
1907-1927, camera and photographic equipment manufacturer, Rochester, New York Folmer-Schwing Division of Eastman Kodak 1907 - 1945
active 1904-1948, optical instrument maker (spectroscopes etc.), London, England Adam Hilger Limited 1904 - 1945
1903-, manufacturer of scientific instruments, Acton, London; Watford, England S G Brown Limited 1903
active, c. 1930 - current (2009), manufacturer of water purification equipment, United Kingdom The Permutit Company Limited 1912 - 1993
1926-1960, manufacturer of electrical & electronic radio and tv equipment, Southend-on-Sea, England E K Cole Limited 1926 - 1960
active 1916-1972, telegraphic, telephonic and telecommunication equipment manufacturer, Glasgow, Scotland; Croydon, Surrey, England, British Creed and Company Limited 1912
1928-1946, camera and photographic equipment manufacturer, Rochester Folmer Graflex Corporation 1928 - 1946
active 1950s-1970s, 1919-2008, graphic designer; poster artist; artist, British Stevens, Harry 1919 - 2008
1927-1971, manufacturer of dyestuffs, Blackley, Manchester, England Imperial Chemical Industries Limited, Dyestuffs Division 1927 - 1971
