Patents by Inventor Charles W. Michalk

Charles W. Michalk 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).

  • Storage unit for a pair of skates
    Patent number: D368403
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: April 2, 1996
    Inventors: Charles R. Michalk, Charles W. Michalk