Patents by Inventor Heinz F. Schiebelhuth

Heinz F. Schiebelhuth 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).

  • Frequency indicator for receiving devices
    Patent number: 4040719
    Abstract: A liquid crystal display panel for indicating operating frequency of a receiver is operated by a circuit providing digital control signals and an alternating current signal.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: August 9, 1977
    Inventor: Heinz F. Schiebelhuth