Portable electric fire with 4 replaceable vertical wire-wound elements of 700 watts each and 2 switches, whole of brass and copper construction, removeable contact points of elements patented in 1935 (pat no 42 2836) by Koninklijke Fabriek "Inventum" of Bilthoven, Netherlands, made in England, 1935-1940 Portable electric fire with 4 replaceable vertical wire-wound elements 1935-1940