4. Automatic temperature and humidity regulation
  5. Hot-air furnace
  6. Air and fire control

Jerry D. Ryan

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Blower control circuit for a furnace

Automatic temperature and humidity regulation – Hot-air furnace – Air and fire control
Patent

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Identification of electric heater capacity

Electric resistance heating devices – Heating devices – Convection space heater
Reexamination Certificate

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Identification of electric heater capacity

Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate

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Self-configuring controls for heating, ventilating and air...

Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1990087

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