71536863
Oct 6, 1947
May 23, 1950
GAS HEATING APPARATUS AND APPLIANCES AND PARTS THEREFOR, INCLUDING GAS CONVERSION BURNERS, AUTOMATIC GAS PILOTS, ATTACHABLE GAS WATER HEATING UNITS, AND THE FOLLOWING APPLIANCES FOR USE IN CONNECTION WITH GAS BURNING EQUIPMENT, VIZ.: CONTROL VALVES, PRESSURE AND VACUUM RELIEF VALVES FOR GAS WATER HEATING SYSTEMS, AUTOMATIC GAS CONTROL VALVES AND PRESSURE REGULATORS, DRAFT HOODS, AND LOW WATER CUT-OFF DEVICES
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