Patents by Inventor Stephen L. Levitan

Stephen L. Levitan 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: 5214890
    Abstract: An office panelling system is disclosed which readily accommodates the initial or retrofit of communication cables and the like cables which generally do not require an electrical conduit. The individual panels of the system have a metal framework to which decorative covers are secured. The framework and covers have been adapted to define a passageway along the panel which is accessible by removing of the covers. With this arrangement, communication cables may be installed without stringing of the cables through ports in the framework.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: June 1, 1993
    Assignee: Teknion Furniture Systems
    Inventors: Stephen L. Levitan, John Hellwig, Alexandre B. F. Coelho
  • Patent number: 4979535
    Abstract: An umbrella has a frame with a shaft and a series of ribs hingedly secured thereto for movement between a folded position and an extended position. The shaft has a tip projecting beyond the ribs, and the ribs having free end portions remote from the shaft. A cover has a central aperture receiving the shaft tip, and the cover is detachably retained in assembly with the shaft tip. The cover also has a periphery with a series of loops spaced therearound. A series of connectors are provided, each having a body with an aperture in one end detachably receiving a free end portion of a rib and a groove at an opposite end detachably receiving a loop to detachably retain the cover in place.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: December 25, 1990
    Inventors: Mark H. Sadowski, Stephen L. Levitan
  • Patent number: D326184
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: May 19, 1992
    Inventors: Mark H. Sadowski, Stephen L. Levitan