Patents by Inventor Donald G. Gilbert

Donald G. Gilbert 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: D275842
    Type: Grant
    Filed: October 4, 1982
    Date of Patent: October 9, 1984
    Inventors: Donald G. Gilbert, Roy E. Hastings