Patents by Inventor Karen R. Manchester

Karen R. Manchester 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: D318547
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: July 23, 1991
    Inventors: Karen R. Manchester, Sterling M. Roberts