Patents by Inventor David B. Lee

David B. Lee 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).

  • Elevatable stool construction
    Patent number: 4624341
    Abstract: An extensible foot stool apparatus (10) comprising a generally conical housing unit (11) having retractable roller units (12), and adapted to slideably and releasably receive a generally cylindrical primary weight supporting unit (13) in both a retracted and extended mode.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: November 25, 1986
    Inventor: David B. Lee
  • Stereoscopic video camera
    Patent number: 4583117
    Abstract: A stereoscopic camera system is disclosed for producing an "over-and-under" format suitable for stereoscopic video transmission and presentation. The stereoscopic camera system utilizes conventional 60 Hz cameras which are slightly modified in order to utilize only half of the horizontal sweep lines to form the respective left and right subfields in the over-and-under format fields.
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: April 15, 1986
    Assignee: Stereographics Corporation
    Inventors: Lenny Lipton, Lawrence D. Meyer, David B. Lee
  • Combination foldable ruler and level
    Patent number: D333991
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: March 16, 1993
    Inventor: David B. Lee