1857-1969, optical instrument makers (microscope), London, England James Swift and Son Limited 1857 - 1969
1708-1772, active 1731-1770, optician, optical instrument & microscope maker and seller, London, England, English Cuff, John 1708 - 1772
active 1890s-1900s, exposure meter manufacturer & microscope maker, Birmingham, England R. Field & Co.
active 1860-1870, microscope maker; optical instrument maker, France & Germany E Hartnack and Company
active 1946-1970s (?), microscope maker, Bishops Stortford, Herts., England W. R. Prior and Company Limited
active 1928-current (2006) optical instrument maker (telescopes & microscope), Wetzlar, Germany Hensoldt A.G.