Patents by Inventor Donald D. Lakin

Donald D. Lakin 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).

  • Flush valve advertising display device
    Patent number: 5671558
    Abstract: An advertisement display device which is removably secured to a toilet flush valve cap. The device is comprised of a clear plastic valve cap cover which receives advertisements therein and is then placed over the valve cap. The device may be secured onto the valve cap by means of one or more set screws, and is held in position by means of the toilet water inlet pipe.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: September 30, 1997
    Inventor: Donald D. Lakin
  • Flush valve advertising display
    Patent number: D458969
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: June 18, 2002
    Inventor: Donald D. Lakin