Patents by Inventor Hermann Hochhaus

Hermann Hochhaus 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).

  • Arrangement for checking and indicating the malfunction of a lamp in monitoring and switching systems
    Patent number: 4808975
    Abstract: An arrangement for monitoring malfunctioning display lamps in control, switching, safety and indicator systems, wherein the display lamp, which is provided with a series resistor, is connected in parallel with the series connection of a visual indicator and an electronic circuit and this parallel connection is controlled in dependence on the operating state of the display lamp.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: February 28, 1989
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventors: Hermann Hochhaus, Erhard Wilder