Patents by Inventor Doug McGregor

Doug McGregor 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).

  • Extractor tool for plastic risers
    Patent number: D284637
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: July 15, 1986
    Assignee: Pro-Mark, Inc.
    Inventors: K. C. Erickson, Doug McGregor