Patents by Inventor William E. Walden

William E. Walden 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).

  • Vehicle positioning indicator device
    Patent number: 4870413
    Abstract: A self contained electronic vehicle parking device that indicates the relative position of a vehicle in a garage to the operator. A multiple timing circuit is provided to preset indicator activation time and reset the circuit for the next use.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: September 26, 1989
    Inventors: William E. Walden, J. Howard Deme