73142126
Sep 22, 1977
May 9, 1978
FIREPLACE HEATING EQUIPMENT-NAMELY, FREE-STANDING CONVECTOR FIREPLACES INSTALLED IN ROOMS TO PROVIDE AN EFFICIENT SOURCE OF HEATED AIR TO SURROUNDING ROOMS BY GENERATING A FLOW OF HEATED AIR FROM THE CONVECTORS TO THE SURROUNDING ROOMS AND BY INCREASING THE BURNING EFFICIENCY OF THE FUEL
Environmental Control Apparatus