mainly of wood

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Patents Grantslast 30 patents

Information Patent Grant
Wedge tread stair box system
- Patent number 10,260,239
- Issue date Apr 16, 2019
- Convert-A-Stair, L.L.C.
- Francis West Everett
- E04 - BUILDING
Information Patent Grant
Prefabricated staircase and finishing arrangement and installation...
- Patent number 9,121,185
- Issue date Sep 1, 2015
- Gilles Grenier
- E04 - BUILDING
Information Patent Grant
Modular staircase construction
- Patent number 7,469,516
- Issue date Dec 30, 2008
- Lynn H. Smith
- E04 - BUILDING
Information Patent Grant
Elements to be assembled to form temporary stair
- Patent number 4,457,398
- Issue date Jul 3, 1984
- Gilbert Loix
- E04 - BUILDING
Information Patent Grant
3513547
- Patent number 3,513,547
- Issue date May 26, 1970
- E04 - BUILDING