Patents by Inventor George H. McDonald

George H. McDonald 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).

  • Oxygen enrichment system
    Patent number: 4560394
    Abstract: A continuous oxygen enrichment system having waste energy recovery provisions.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: December 24, 1985
    Assignee: The Garrett Corporation
    Inventors: George H. McDonald, Scott A. Manatt