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Class Information
Number: 14/74.5
Name: Bridges > Girder
Description: Subject matter comprising a distinct generally horizontal structural member in the superstructure for supporting a traffic bearing surface.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7421825 Doubly prestressed roof-ceiling construction with grid flat-soffit for extremely large spans Sep. 9, 2008
7418804 Floor structure Sep. 2, 2008
7373683 Construction method for prestressed concrete girder bridges May. 20, 2008
7373760 Floor structure May. 20, 2008
7367075 Girder bridge protection device using sacrifice member May. 6, 2008
7240389 Method of constructing partially earth-anchored cable-stayed bridge using thermal prestressing technique Jul. 10, 2007
7069614 Modular span multi-cell box girder bridge system Jul. 4, 2006
7003837 Bridge construction system Feb. 28, 2006
6857156 Modular bridge structure construction and repair system Feb. 22, 2005
6751821 Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge Jun. 22, 2004
6493895 Truss enhanced bridge girder Dec. 17, 2002
6470524 Composite bridge superstructure with precast deck elements Oct. 29, 2002
6381793 Composite deck system and method of construction May. 7, 2002
6151743 Structural panel for bridging between spaced supports Nov. 28, 2000
6145270 Plasticon-optimized composite beam system Nov. 14, 2000
6081955 Modular polymer matrix composite support structure and methods of constructing same Jul. 4, 2000
6055693 Railway short span trestle bridge May. 2, 2000
6023806 Modular polymer matrix composite support structure and methods of constructing same Feb. 15, 2000
6018834 Method for building a bridge and bridge built according to said method Feb. 1, 2000
6003183 Modular bridge section Dec. 21, 1999
5966764 Roll beam girder system for bridges Oct. 19, 1999
5920937 Covering apparatus for concrete bridge beams and pillars Jul. 13, 1999
5893187 Reinforcing structure for hinge section of gerber bridge Apr. 13, 1999
5870789 Precast bridges Feb. 16, 1999
5867855 Method for connecting precast concrete girders Feb. 9, 1999
5813070 Chord section arrangement with lower chord with integrated guide groove of a bridge section that can be laid mechanically Sep. 29, 1998
5655243 Method for connecting precast concrete beams Aug. 12, 1997
5568667 Structure to interconnect two branches of a suspension bridge framework in correspondence of a pier supporting the catenary Oct. 29, 1996
5553439 Composite, prestressed structural members and methods of forming same Sep. 10, 1996
5487199 Vandalism prevention device for highway bridges Jan. 30, 1996
5471694 Prefabricated bridge with prestressed elements Dec. 5, 1995
5335386 Bridge structure Aug. 9, 1994
5305575 Composite, prestressed structural member and method of forming same Apr. 26, 1994
5301483 Composite, prestressed structural member and method of forming same Apr. 12, 1994
5144710 Composite, prestressed structural member and method of forming same Sep. 8, 1992
4993095 Splice for a structural member Feb. 19, 1991
4920595 Solid bridge kit May. 1, 1990
4912794 Bridge having chords connected to each other by means of pleated steel sheets Apr. 3, 1990
4741063 Suspension bridge structure with flutter damping means May. 3, 1988
4723333 Bridging apparatus and method Feb. 9, 1988
4709456 Method for making a prestressed composite structure and structure made thereby Dec. 1, 1987
4706319 Lightweight bridge structure Nov. 17, 1987
4704754 Tension arch structure Nov. 10, 1987
4692955 Method for erecting a bridge superstructure of prestressed concrete and launching girder for performing the same Sep. 15, 1987
4669143 Support system for a multiple-span bridge Jun. 2, 1987
4665578 Streamlined box girder type suspension bridge May. 19, 1987
4660243 Method for erecting a bridge superstructure of prestressed concrete and launching girder for performing the same Apr. 28, 1987
4644978 Tension arch structure Feb. 24, 1987
4615063 Box girder and suspension assembly Oct. 7, 1986
4604841 Continuous, precast, prestressed concrete bridge deck panel forms, precast parapets, and method of construction Aug. 12, 1986

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