Patents by Inventor Darrell D. Youngquest

Darrell D. Youngquest has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Multiple unit automotive climate control system
    Patent number: 4763564
    Abstract: A multiple unit climate control system for an automotive vehicle having a passenger compartment including, a first air conditioning unit operable in both fresh and recirculating modes. The second air conditioning unit includes means for filtering air passing through the unit. A control system incorporated into the climate control system operates with the assistance of interior and exterior air quality sensors.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: August 16, 1988
    Assignee: Ford Motor Company
    Inventors: John A. Czarnecki, Darrell D. Youngquest