72229175
Oct 4, 1965
Sep 5, 1967
EQUIPMENT FOR HEATING, VENTILATING AND AIR CONDITIONING SYSTEMS-NAMELY, DIFFUSERS, DEFLECTORS, REGISTERS, GRILLES, PLENUM UNITS, AIR DIFFUSER OUTLETS, CONVECTORS, DAMPERS, HIGH VELOCITY PRESSURE REDUCING BOXES, AIR TEMPERATURE MIXING BOXES, AIR VOLUME AND TEMPERATURE CONTROL UNITS, FINNED TUBING, BASEBOARD HEATERS, GRILLE FRAMES, AIR VOLUME AND TEMPERATURE CONTROLLERS, PRESSURE REDUCING VALVES, DIFFUSER PLASTER RINGS, DIFFUSER ANTI-SMUDGE RINGS, DIFFUSER CONTROL GRIDS, AND DIFFUSER BAFFLES
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