Patents Assigned to Con/Span Bridge Systems, Inc.
  • Concrete bridge section
    Patent number: D406902
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: March 16, 1999
    Assignee: Con/Span Bridge Systems, Inc.
    Inventor: William D. Lockwood
  • Composite bridge deck pultrusion
    Patent number: D426321
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: June 6, 2000
    Assignee: Con/Span Bridge Systems, Inc.
    Inventor: William D. Lockwood