Patents by Inventor Leung C. Sum

Leung C. Sum 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: 4663697
    Abstract: A fluorescent lantern supports a pair of fluorescent tubes for vertical sliding movement so that the tubes can be replaced simply by removing the cover of the lantern and withdrawing the tubes. Each of the fluorescent tubes is supported in a socket in the base of the lantern and extends upwardly through an opening in the top of the lantern. The cover is removably attached to the top by tabs so that the cover can be removed by rotating and lifting the cover. When the cover is removed, the fluorescent tubes can be withdrawn upwardly through the openings in the top. The base includes a battery compartment for a battery power source, and the battery compartment is closed by a battery cover which is removably attached to the base by tabs so that the cover can be removed by rotating and withdrawing the cover.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: May 5, 1987
    Assignee: The Coleman Company, Inc.
    Inventors: David Stearns, Leung C. Sum, Jacob Henegar
  • Patent number: D367933
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: March 12, 1996
    Assignee: Create Limited
    Inventor: Leung C. Sum