Patents by Inventor Dominique Eustache

Dominique Eustache 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).

  • Automobile burglary detecting circuit
    Patent number: 4777468
    Abstract: An automobile burglary detecting circuit for use with an automobile electrical system having an electrical accessory activated by a switch. The detecting circuit also includes a signal generator for imposing an oscillating signal on the electrical system, and a signal detector which detects the signal from the system. An alternative embodiment includes a further signal generator which is responsive to the signal detector, and which imposes a second oscillating signal on the electrical system. The second oscillating signal is detected by a filter which activates an alarm.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: October 11, 1988
    Assignee: Rich & Ezer, A Law Corporation
    Inventors: Dominique Eustache, Rene Soum, Pierre Granel, Richard Rich