Patents by Inventor Mark U. Polyak

Mark U. Polyak 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 telephone system
    Patent number: 5014315
    Abstract: A digital telephone system, having a through-switching module connected by its inputs/outputs to "1" subscriber concentration modules, each with group subscriber inputs/outputs connected via remote subscriber modules to groups of telephone sets. The telephone sets are digital telephone sets with inputs/outputs connected to individual subscriber inputs/outputs of remote subscriber modules via digital individual subscriber lines to provide transmission and reception of digitally coded information.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: May 7, 1991
    Inventors: Mark U. Polyak, Gely P. Abugov, Vladimir B. Belyak