active 1921-1947, publisher of psychological assessments, American The Psychological Corporation 1921
active 1887 -1920s?, manufacturer of leather goods, picnic baskets and silver, London, ENgland Drew and Sons 1887 - 1935
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 1928-1954, laboratory apparatus; laboratory instrument maker, London, England Griffin and Tatlock Limited 1889 - 1999
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
1889-1957, manufacturer of comptometers, Chicago, United States Felt and Tarrant Manufacturing Company 1889 - 1957
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
1891-1987, physiological instrument maker, London, England, British C F Palmer (London) Limited 1891 - 1987
1892-1974, manufacturer of radios, televisions, batteries, white goods and computers, Philadelphia, America Philco Corporation 1892 - 1974
1917-1958, manufacturer of projectors and cine equipment, Leeds, United Kingdom Kalee Limited 1917 - 1958
active 1879-1986, pharmacist and surgical instrument makers, English Brady and Martin Limited 1886 - 1986
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
1881-1952, manufacturer of measuring and testing machines, Leipzig, Germany Louis Schopper 1881 - 1952
1890-1932, manufacturer of gas engines, Ashton-under-Lyne, England National Gas Engine Company 1890 - 1932
1888-1981, scientific instrument, optics, camera and cinema projector manufacturer, Leeds A. Kershaw and Sons Limited 1888
