Patents by Inventor Stephen G. Bettum

Stephen G. Bettum 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).

  • Data processing card holder
    Patent number: D244565
    Type: Grant
    Filed: September 11, 1975
    Date of Patent: May 31, 1977
    Inventor: Stephen G. Bettum