c. 1875 -1998, manufacturer of ceramics, Burslem, England Dunn, Bennett and Company Limited 1878 - 1998
active 1897-1968, laboratory apparatus and instrument maker, London, England Baird and Tatlock (London) Limited 1897 - 2012
active 1853-1921, optical, mathematical, philosophical & electrical inst. maker, London, England Elliott Brothers 1853 - 1921
1857-1969, optical instrument makers (microscope), London, England James Swift and Son Limited 1857 - 1969
active 1948-1969, optical instrument maker (spectroscopes etc.), London, England Hilger and Watts Limited 1948 - 1969
active 1805-1845, optician, nautical instrument maker, Portsmouth, English Stebbing, George 1775 - 1847
1816-1968, manufacturer of pharmaceutical products, Edinburgh, Scotland Duncan Flockhart and Company Limited 1816
active 1925-1998, manufacturer of pharmaceutical and medical supplies, Liverpool Evans Medical Limited 1925 - 1998
1878-1969, mathematical & scientific instrument maker, Manchester & London, England J Halden and Company Limited 1878 - 1969
(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 1986-1997, manufacturer of healthcare equipment, Uppsala, Sweden, Swedish Pharmacia Biotech 1986 - 1997
1935-1994, manufacturer of medical instruments, Quincy, Massachusetts, United States Grass Instrument Company 1935
1963-1987, researcher; manufacturer of electronic communication equipment, United Kingdom Marconi Company Limited 1963 - 1987
active 1924/6-1967, electrical measuring & scientific instrument maker, London, England, British Cambridge Scientific Instrument Company Limited 1924 - 1967
1880-1995, laboratory equipment manufacturer (chemistry, physics), London, England A Gallenkamp and Company Limited 1880 - 1995
1578-1657, physician; discoverer of the circulation of the blood, English Harvey, William 1578 - 1657
c.1880 -1992, stationers; scientific equipment manufacturer, Manchester, England A G Thornton Limited 1880 - 1992
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
1818-1984, lock and safe manufacturer, England, British Chubb and Son's Lock and Safe Company Limited 1818 - 1984
