Patents Assigned to Leban Group
  • Inconspicuous, room-ceiling-mountable, non-productive-energy-loss-minimizing, air diffuser for a room
    Patent number: 5107755
    Abstract: A ceiling-mounted air diffuser apparatus in which a annular discharge opening is effectively defined at a location between an effective inner margin of a drop-ceiling-supporting framework and surrounding ceiling panels and an inwardly spacedly adjacent outer margin of an intermediate, generally similarly shaped but smaller, ceiling panel positioned in a symmetrically centered location within the large vertical ceiling opening.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: April 28, 1992
    Assignee: Leban Group
    Inventors: Raymond F. Leban, Francis L. McCall