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Class Information
Number: D25/69
Name: Building units and construction elements > Stair, ladder, scaffold, or similar support > Element or attachment (16) > Stair tread, step or ladder rung
Description:










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
D685503 Stair nosing cover Jul. 2, 2013
8453395 Modular stairway system and kit therefor Jun. 4, 2013
D683479 Ladder step May. 28, 2013
D682446 Stair tread May. 14, 2013
D674509 Ladder stile section Jan. 15, 2013
D661816 Stair tread Jun. 12, 2012
D658309 Portion of a ladder Apr. 24, 2012
D656241 Tread module for a horizontal walkway or stairway Mar. 20, 2012
D655597 Step device Mar. 13, 2012
D644743 Step re-facer Sep. 6, 2011
D642702 Tread cover Aug. 2, 2011
D631981 Climbing step Feb. 1, 2011
D631980 Climbing step Feb. 1, 2011
D621961 Stair nosing Aug. 17, 2010
D613425 Ladder rung Apr. 6, 2010
D611617 Scaffolding equipment Mar. 9, 2010
D594564 Stair tread plate Jun. 16, 2009
D593685 Telescoping ladder rung Jun. 2, 2009
D586001 Climbing apparatus Feb. 3, 2009
D573723 Floor step Jul. 22, 2008
D563565 Portion of staircase Mar. 4, 2008
D556917 Two sided manhole step Dec. 4, 2007
D555807 Ladder support Nov. 20, 2007
D519648 Step marking profile Apr. 25, 2006
D506271 Step riser Jun. 14, 2005
D505211 Laminate stairnose molding May. 17, 2005
D500862 Step riser Jan. 11, 2005
D500860 Step riser Jan. 11, 2005
D500861 Step riser Jan. 11, 2005
D490907 Two-sided manhole step Jun. 1, 2004
6634145 Modular stone stair system Oct. 21, 2003
D470949 Flange step Feb. 25, 2003
D463039 Tread of a staircase Sep. 17, 2002
D462453 Ladder step Sep. 3, 2002
D460200 Stairway tread edge Jul. 9, 2002
D452742 Step for climbing wall surface Jan. 1, 2002
D448091 Turtle shell motif for step stool Sep. 18, 2001
D447249 Anti-slip strip for stairs Aug. 28, 2001
D445617 Lattice shelf Jul. 31, 2001
D435117 Grandstand seat board Dec. 12, 2000
D435118 Step for climbing wall surface Dec. 12, 2000
D434158 Ladder step extender Nov. 21, 2000
D431303 Pool stair Sep. 26, 2000
D429002 Step for climbing wall surface Aug. 1, 2000
D429003 Step for climbing wall surface Aug. 1, 2000
D426896 Ladder rung expander Jun. 20, 2000
D424707 Step riser May. 9, 2000
D417012 Portable tree step Nov. 23, 1999
D415289 Stair tread surface Oct. 12, 1999
D412754 Scaffold step Aug. 10, 1999

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