73005829
Nov 8, 1973
Aug 26, 1975
FACTORY-BUILT FIREPLACES; WARM-AIR CIRCULATING SYSTEMS FOR MASONRY FIREPLACES; AND FIREPLACE ACCESSORIES-NAMELY, GRATES, DAMPERS, FACINGS, HEARTHS, GAS FIRED LOG LIGHTERS, CHIMNEY SPARK ARRESTERS, FLUES, CHIMNEY FITTINGS, GAS BURNERS, AIR GRILLES AND FANS FOR FIREPLACE USE, ASH DUMPS, AND ASH BOXES
Environmental Control Apparatus