Patents by Inventor Ralph H. Erickson

Ralph H. Erickson 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: D313646
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: January 8, 1991
    Assignee: Brass-Craft Manufacturing Company
    Inventors: Timothy S. Selberg, Ralph H. Erickson