Patents by Inventor Robert R. Winter

Robert R. Winter 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).

  • Key chain
    Patent number: D403500
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: January 5, 1999
    Inventor: Robert R. Winter
  • Key chain
    Patent number: D403501
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: January 5, 1999
    Inventor: Robert R. Winter
  • Key chain
    Patent number: D403502
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: January 5, 1999
    Inventor: Robert R. Winter