Patents by Inventor Ervin C. Engehardt

Ervin C. Engehardt 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: 4321768
    Abstract: Disclosed herein is a device for amusing young children and the like by utilization of correlatives electronically provided for educational benefit. The device includes a housing adapted to be affixed to a safety seat and an automobile within which the child is placed and includes a source of power, a display board which appears to have the visage of a person or the like, and a control panel having plural switches thereon for selected engagement of various groups of lights provided on the visage. By appropriate switching, various aspects of the amusement face can be illuminated.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: March 30, 1982
    Inventor: Ervin C. Engehardt