Patents by Inventor Robert S. Dworkin

Robert S. Dworkin 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).

  • Segmented panel curtain opening closure
    Patent number: 4304174
    Abstract: An improved opening closure system utilizing a plurality of curtains supported in a way to cover the opening with alternate embodiments having primary and secondary curtains acting as a thermal siphon and with fan units as a power air destratifier.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: December 8, 1981
    Assignee: Entropy Controls, Inc.
    Inventors: Jeffrey D. Hickson, Robert S. Dworkin