Patents by Inventor Gunter Ruff

Gunter Ruff 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).

  • Subscriber telephone station
    Patent number: 4542262
    Abstract: A subscriber telephone station in a dial telephone network, composed of: a main subscriber instrument connected by wire into the network, a portable second instrument, and circuitry establishing wireless signal transmission and reception communication between the instruments for permitting the second instrument to be connected into the network for communication with other instruments connected to the network.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: September 17, 1985
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventor: Gunter Ruff