Maple syrup vaporizer apparatus with hollow shell recirculation
Mechanical thermostat having proportional control for a solid fu
Method and apparatus for heating and generating infrared rays
Method and apparatus for improved construction of fuel burning h
Method and means for heating by wood burning
Method and means for heating by wood burning
Methods of fabricating a vent/intake system for a fuel-fired, di
Mid-efficiency furnace with multiple venting option
Miniature patio heater
Miniature patio heater
Miniature patio heater
Mounting for duty cycle control switch for ceiling mounted ductl
Multi-fuel burner and heat exchanger