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Tread for steel-pan stairways
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Patent number 9,593,489
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Issue date Mar 14, 2017
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Progressive Safety Solutions, LLC
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David M. DeChristofaro
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E04 - BUILDING
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Refaced staircase
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Patent number 8,745,937
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Issue date Jun 10, 2014
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Ideal Wood Products, Inc.
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Bruce R. Mang
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E04 - BUILDING
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Hardwood stair tread overlay
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Patent number 8,640,404
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Issue date Feb 4, 2014
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James M. McCool
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Stairway tread and riser assembly
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Patent number 8,281,526
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Issue date Oct 9, 2012
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MPI Concepts, Inc.
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Michael Henry Prins
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Stair system
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Patent number 8,033,063
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Issue date Oct 11, 2011
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Yong Hwan Won
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E04 - BUILDING
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Wooden stairtread
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Patent number 6,596,362
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Issue date Jul 22, 2003
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Min-Ju Chung
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Beach stairway
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Patent number 6,526,706
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Issue date Mar 4, 2003
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Creative Homebuilding Inc.
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William J. Fowler
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E04 - BUILDING
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Stair tread
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Patent number 6,173,540
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Issue date Jan 16, 2001
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Fenner N. Spivey
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B32 - LAYERED PRODUCTS
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Modular Staircase
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Patent number 6,112,480
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Issue date Sep 5, 2000
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Scott A Turner
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E04 - BUILDING
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