E04F 11/022

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9840847 Curved staircaseSep 02, 16Dec 12, 17Not available
9828762 Earthquake resistant building connection and an earthquake resistant staircase systemFeb 27, 15Nov 28, 17Svein Berg Holding AS
9758981 Stair expansion joint system with freedom of movement between landingsMar 23, 16Sep 12, 17EMEH, INC.
9683372 Stair systems and wall assemblies comprising sameMar 18, 16Jun 20, 17Diamond Stairs Inc.
9347224 Step-block precast stairMar 06, 15May 24, 16UMM AL-QURA UNIVERSITY
9290947 Stair systems and wall assemblies comprising sameJul 31, 12Mar 22, 16Diamond Stairs Inc.
8925255 Wall, roof and building structuresApr 25, 14Jan 06, 15Solarcraft, Inc.
8771544 Stair tower moduleMay 07, 11Jul 08, 14Not available
7966781 Profiled cover strip system with a facing device for a stair step which is open on at least one front sideApr 23, 07Jun 28, 11Proverum AG
6758016 Adjustable support for stepsMar 08, 02Jul 06, 04Not available
5875593 Support member for center support stairsJul 16, 97Mar 02, 99Not available