Patents by Inventor Andre kaczerowski

Andre kaczerowski 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).

  • Digital satellite exchange
    Patent number: 4689783
    Abstract: A digital satellite exchange for connecting analog and digital subscriber lines comprises a digital control unit and subscriber line digital concentrators of at least one of the following types: local analog subscriber line type, remote analog subscriber line type, local digital subscriber line type, remote digital subscriber line type, remote analog/digital subscriber line type. Each concentrator is connected to the control unit by a multiplex link. The control unit concentrates the multiplex links and is connected to a digital subscriber exchange by a further multiplex link.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: August 25, 1987
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Andre kaczerowski