Patents Assigned to Keller Ladders, Inc.
  • Ladder rack
    Patent number: D383335
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: September 9, 1997
    Assignee: Keller Ladders, Inc.
    Inventors: David M. Shanahan, J. Dennis Gordon
  • Ladder rack
    Patent number: D392820
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: March 31, 1998
    Assignee: Keller Ladders, Inc.
    Inventors: David M Shanahan, J. Dennis Gordon
  • Ladder tray
    Patent number: D404502
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: January 19, 1999
    Assignee: Keller Ladders, Inc.
    Inventor: David M. Shanahan