Patents by Inventor Charles E. Thayer

Charles E. Thayer 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).

  • Pet feeder
    Patent number: D257692
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: December 23, 1980
    Inventor: Charles E. Thayer