Patents by Inventor Robert J. Dart

Robert J. Dart 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: D337247
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: July 13, 1993
    Inventor: Robert J. Dart