Patents by Inventor David Lamont Walker

David Lamont Walker 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: D553876
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: October 30, 2007
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker
  • Patent number: D553877
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: October 30, 2007
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker
  • Patent number: D560924
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: February 5, 2008
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker
  • Patent number: D569149
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: May 20, 2008
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker
  • Patent number: D573387
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: July 22, 2008
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker
  • Patent number: D609951
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: February 16, 2010
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker
  • Patent number: D609952
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: February 16, 2010
    Assignee: Zenith Products Corp
    Inventor: David Lamont Walker
  • Patent number: D609953
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: February 16, 2010
    Assignee: Zenith Products Corp
    Inventor: David Lamont Walker
  • Patent number: D672178
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: December 11, 2012
    Assignee: Zenith Products Corporation
    Inventor: David Lamont Walker
  • Patent number: D435326
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: December 19, 2000
    Assignee: Zenith Products Corp.
    Inventor: David Lamont Walker