Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 133,814 pages of information and 211,901 images on early companies, their products and the people who designed and built them.
of Elecfurn Works, North Road, Holloway, London, N7. Telephone: North 3082 (3 lines). Telegraphic Address: "Elecfurn, Holoway, London"
1928 Name changed.
1928 Patent - Improvements relating to electric furnaces. 
1929 Patent - Improvements in electric furnaces. 
1937 Electric furnace manufacturers.
1937 Listed Exhibitor - British Industries Fair. Electric Furnaces and Equipment for all heat-treatment purposes, including hardening, tempering, bright annealing, nitriding, brazing; also for Pottery Work. Melting, Enamelling, Carburising Compounds and Hardening Shop Materials. Testing Machines. (Stand Nos. Cb.403 and Cb.302) 
1939 See Aircraft Industry Suppliers
1961 Manufacturers of electric furnaces and other equipment for heat treatment. 350 employees. 
1972 Order for razor blade hardening furnace received from India