active 1864-1870/5 & 1900-1915, electrical measuring and scientific instrument maker, French Ducretet, Eugene 1844 - 1915
active 1905-1967, electrical instrument maker, London, England, British Elliott Brothers (London) Limited 1905 - 1967
active 1853-1921, optical, mathematical, philosophical & electrical inst. maker, London, England Elliott Brothers 1853 - 1921
active, c.1877-1880/90s?, optician, electrical apparatus manufacturer, London, England Tisley and Company