4. Automatic temperature and humidity regulation
  5. Ventilator type

Douglas F. Edwards

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Flow adjustment mechanism for air distribution systems

Automatic temperature and humidity regulation – Ventilator type
Patent

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Flow adjustment mechanism for air distributor systems

Automatic temperature and humidity regulation – Ventilator type
Patent

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Gear drive unit with modifications

Machine element or mechanism – Gearing – Interchangeably locked
Patent

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Infinitely variable speed drive with differential having two inp

Machine element or mechanism – Elements – Gear casings
Patent

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Resilient mechanism for shifting gears

Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent

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Profile ID: LFUS-PAI-P-845764

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