Patents by Inventor Donald L. Theurer

Donald L. Theurer 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).

  • Patent number: 4008369
    Abstract: A PABX telephone interfaced cable television system especially useful in hotels and motels for distributing free and premium program channels via a coaxial cable television signal distribution network to one or more subscriber terminals and associated television sets, includes a remotely tuned R.F. signal converter connected to each subscriber's television set and the coaxial cable network for enabling the set to receive a subscriber selected one of the premium channels not normally receivable by the set. The converter is automatically tuned to the selected premium channel by enabling signals transmitted from a central station to the subscriber's converter via the PABX telephone network and the subscriber's telephone. The request for a premium channel is made from the subscriber's telephone by the dialing of a predetermined sequence of digits peculiar to the requesting subscriber and the desired premium channel selected for viewing.
    Type: Grant
    Filed: February 28, 1975
    Date of Patent: February 15, 1977
    Assignee: The Magnavox Company
    Inventors: Donald L. Theurer, Paul M. Dormans