Patents by Inventor Duane E. Learning

Duane E. Learning 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).

  • Safety gate
    Patent number: D485911
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: January 27, 2004
    Assignee: Can-Am Industrial Safety Gates Ltd.
    Inventors: Duane E. Learning, Sydney F. Harry