Patents by Inventor Gary Don Armstrong

Gary Don Armstrong 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).

  • Belt guard
    Patent number: D809019
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: January 30, 2018
    Inventor: Gary Don Armstrong
  • Atmospheric vent can
    Patent number: D820396
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: June 12, 2018
    Inventor: Gary Don Armstrong
  • Centripetal air/oil separator for diesel engines
    Patent number: D956823
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: July 5, 2022
    Inventor: Gary Don Armstrong