Patents by Inventor Michael Graziosi

Michael Graziosi 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).

  • Combination switch lock for a motor vehicle ignition system
    Patent number: 4000409
    Abstract: A combination switch lock for a motor vehicle ignition system, having a multiplicity of switches, a predetermined number of which are in series with the ignition circuit. The ignition circuit is completed only when a series of predetermined switches are closed. A bypass circuit is provided for use during emergencies or when the switches have been tampered with.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: December 28, 1976
    Inventor: Michael Graziosi