Patents by Inventor Jeffery W. Dunn

Jeffery W. Dunn 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: 4921427
    Abstract: An educational device includes a generally L-shaped visual blocking stand for obstructing visual contact between a question asking individual and a question answering individual. A representation of a human eye is formed on one side of a vertical portion of the stand and includes two different colored electric lamps connected for selectively illuminating the eye to indicate a correct or wrong answer. A plurality of cards each have a question relating to a particular curriculum on a first side and a multiple choice group of answers on an opposite side. A slot is formed in the vertical stand portion for conveying information on one of the cards. A plurality of switches are operative to illuminate the different colored electric lamps to indicate when a correct or wrong answer has been given.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: May 1, 1990
    Inventor: Jeffery W. Dunn