Patents by Inventor Steven Wiersema

Steven Wiersema 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: D347856
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: June 14, 1994
    Assignee: Educational Insights, Inc.
    Inventors: Eddie Marfori, Steven Wiersema