active about 1919-1920s, maker of electrotherapeutic equipment, Paris, France Établissements Gaiffe-Gallot et Pilon 1919
b. 1923, author, former employee of Autotype Company, British? Mitchell, Katherine Jane Margaret 1923
1923-current (2011), furniture designer/ manufacturer, Zeeland, Michigan, United States Herman Miller, Inc 1923
1925-current (2009), audio, video, telecoms and multimedia manufacturer, Struer, Denmark Bang and Olufsen 1925
1919-current, thermometer manufacturer, Cleator Moor, Cumbria, England, British S Brannan and Sons Limited 1919
active 1917-current (2009), ophthalmic instrument maker, London & Windsor, England Keeler Instruments Limited 1917
1924-current (2010), manufacturer of electro-medical equipment, London, later Wantage, England Electro Medical Supplies (Greenham) Limited 1924