Patents by Inventor John Peter Dworetzky

John Peter Dworetzky 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).

  • Patent number: 3943641
    Abstract: An audience response system includes a console having a plurality of pairs of lamps in which one lamp of each pair is grouped with corresponding ones of the lamps of the other pairs. The system also includes a plurality of switches, each for controlling the lighting of a different pair of lamps, and a plurality of timers, each of which is activated by a different one of the switches. When a particular one of the lamps of a pair is lighted by the associated switch, then the corresponding timer is also activated, and when the other lamp of the pair is lighted, the corresponding timer is deactivated. An additional switch is provided to activate an additional timer and deactivate the plurality of timers.
    Type: Grant
    Filed: April 10, 1974
    Date of Patent: March 16, 1976
    Inventor: John Peter Dworetzky