Patents by Inventor Ian S. Campbell

Ian S. Campbell 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: D301520
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: June 13, 1989
    Inventor: Ian S. Campbell