Patents by Inventor Heinz Huettl

Heinz Huettl 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).

  • Circuit arrangement for an interference data alarm system in communication facilities, particularly in telephone equipment
    Patent number: 4187414
    Abstract: Error and condition messages are transmitted from unmanned telecommunication facilities to a central exchange having a maintenance control station. In order to safeguard this interference data alarm system against interferences in the secondary station and in the telephone network, the transmitting test unit is inserted in several lines used for normal telecommunications traffic, said lines leading to the maintenance control station. In order to transmit the messages, any one of these lines can be automatically selected for maintenance purposes by the transmitting test unit, whereupon a connection to the maintenance control station is automatically established and the necessary data sent to such station. A data dialog for error analysis is possible.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: February 5, 1980
    Assignee: Siemens Aktiengesellschaft
    Inventors: Franz Fahrenschon, Heinz Huettl, Ewald Dotzauer