Patents by Inventor Hugh C. Apple

Hugh C. Apple 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).

  • Method and apparatus for conditioning air
    Patent number: 4103508
    Abstract: A method and apparatus for providing temperature and humidity controlled air to an enclosed space within a building to achieve desired conditions of temperature and humidity therein, and which is characterized by the maximum use of the outside air for cooling purposes to thereby minimize the load on the refrigeration unit and thus also minimize the operating expense thereof.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: August 1, 1978
    Inventor: Hugh C. Apple