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Ventilation system for reducing the humidity in an attic or roof

Automatic temperature and humidity regulation – Humidity control
Patent

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Ventilation system with humidity responsive ventilation...

Automatic temperature and humidity regulation – Humidity control
Reexamination Certificate

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Ventilation system, particularly for use in the agricultural fie

Automatic temperature and humidity regulation – Ventilator type – Electrically actuated
Patent

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Ventilation systems

Automatic temperature and humidity regulation – Humidity control
Patent

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Ventilator

Automatic temperature and humidity regulation – Ventilator type – Mechanical linkage actuated
Patent

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Ventilator actuator

Automatic temperature and humidity regulation – Snap-acting – Including a permanent magnet
Patent

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Ventilator assembly

Automatic temperature and humidity regulation – Ventilator type
Patent

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Ventilator control device

Automatic temperature and humidity regulation – Ventilator type – Electrically actuated
Patent

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Ventilator drive system

Automatic temperature and humidity regulation – Humidity control
Patent

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Ventilator for beneath enclosed structures

Automatic temperature and humidity regulation – Humidity control
Patent

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Ventilator for beneath enclosed structures

Automatic temperature and humidity regulation – Humidity control
Patent

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Ventilator with adjustable installation means

Automatic temperature and humidity regulation – Thermostatic – Expanding solid
Patent

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Venting system for insulating window shade

Automatic temperature and humidity regulation – Ventilator type
Patent

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Versatile HVAC sensor

Automatic temperature and humidity regulation – Humidity control
Reexamination Certificate

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Vibration damping device for thermostatic expansion valves

Automatic temperature and humidity regulation – Thermostatic – With pressure control
Patent

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Viscosity regulating apparatus and method

Automatic temperature and humidity regulation – Miscellaneous – Burner controls with automatic cutoff
Patent

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Visual and reading enhancement apparatus for thermostats and...

Automatic temperature and humidity regulation – Thermostatic – With indicator or alarm
Reexamination Certificate

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Voltage boosting system and method for electronic thermostat rel

Automatic temperature and humidity regulation – Motors – Electric
Patent

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Vortex valve flow controller in VAV systems

Automatic temperature and humidity regulation – Ventilator type – Pneumatically actuated
Patent

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