Patents by Inventor Douglas C. Gray

Douglas C. Gray 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).

  • Patent number: D412021
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: July 13, 1999
    Assignee: Southern Tier Plastics, Inc.
    Inventor: Douglas C. Gray