Odourless Lawson Room Heater, a portable flueless double-sided gas fire which can double as a simple cooker, with central row of burners, perforated iron radiant above surrounded by dress guard, all in sheet steel casing enamelled Lincoln green, patent no 10041-1000 in 1910, English, 1913-1925 Odourless Lawson Room Heater 1913-1925