Patents by Inventor Don Carlin Rowlett

Don Carlin Rowlett 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).

  • Washer
    Patent number: D659529
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: May 15, 2012
    Assignee: Kennametal Inc.
    Inventors: Randall Walter Ojanen, Don Carlin Rowlett