Patents by Inventor Duane Harwood

Duane Harwood 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).

  • Medical waste disposal container lid
    Patent number: D404483
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: January 19, 1999
    Assignee: Graphic Controls Corporation
    Inventors: Duane Harwood, Mike Griffin