Patents by Inventor Robert J. Dottinger

Robert J. Dottinger 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).

  • Step stool
    Patent number: D244494
    Type: Grant
    Filed: January 12, 1970
    Date of Patent: May 31, 1977
    Assignee: Litton Business Systems, Inc.
    Inventor: Robert J. Dottinger