Patents by Inventor Gunter Warnecke

Gunter Warnecke 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).

  • Device for visual display of telephone operation symbols
    Patent number: 4352959
    Abstract: In accordance with the invention there is provided a display device for visual display of telephone operation symbols in telecommunication apparatus which includes, for example, a key-dialing block. The device has a display element incorporated in a key-dialing block and an electronic circuit controlling the display element. The device is such as to provide a visual display showing a first symbol when one telephone set in a two set circuit is in use while displaying a second symbol when a number is dialed with the receiver replaced.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: October 5, 1982
    Assignee: Krone GmbH
    Inventors: Gunter Warnecke, Gerhard Schiller