Patents by Inventor David W. Millard

David W. Millard 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).

  • Instant placement down rod
    Patent number: 5067245
    Abstract: A combination down marker and football position determining device for use by football game officials to indicate the down of play and the location of the football relative to the sideline of the football field. A compound prism member mounted within the marker rod allows quick and accurate position determination.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: November 26, 1991
    Inventor: David W. Millard