Patents by Inventor Maria G. Alvarez-Ryan

Maria G. Alvarez-Ryan 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).

  • Video telephone set
    Patent number: D341586
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: November 23, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Maria G. Alvarez-Ryan, Paul E. Crouch, Pratod V. Kasbekar, Bernard T. Lee, Jonathan A. Marks, Thomas L. Stahly, Gordon E. Sylvester, Alvin R. Tilley, Michael P. Zambelli