Patents by Inventor Donald F. Ketchel

Donald F. Ketchel 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: 3940196
    Abstract: A cabinet for enclosing the faucets of a bathtub having a spring loaded latch requiring an operating force of sufficient magnitude to prevent small children from operating the cabinet and operating the faucets.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: February 24, 1976
    Inventor: Donald F. Ketchel