Multipoise furnace cabinet
NO.sub.X reducing device for fuel-fired heating appliances
NOX reducing combustor tube insert apparatus
One shot heat exchanger burner
Pilot gas bypass system for fuel-fired furnaces
Plastic secondary heat exchanger apparatus for a high efficiency
Pocket heat exchanger
Portable blower heater/cooler apparatus
Portable forced air heater
Portable heat distribution system
Portable hot air circulator
Portable kerosene heater
Portable LP space heater
Portable space heater
Portable space heater
Power burner-fluid condensing mode furnace
Power gas burner
Pulse combustion apparatus
Pulse combustion apparatus
Pulse combustion apparatus