TREA

having a central stringer

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Industry

  • CPC
  • E04F11/028
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Parent Industries

EFIXED CONSTRUCTIONS E04Building E04FFINISHING WORK ON BUILDINGS E04F11/00Stairways, ramps, or like structures Balustrades Handrails

Current Industry

E04F11/028having a central stringer
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    System and method for stair assembly and installation
    • Patent number 10,358,827
    • Issue date Jul 23, 2019
    • Robert Everett Sorenson
    • E04 - BUILDING
  • Information Patent Grant

    Open stair case with center uncut stringer
    • Patent number 10,006,207
    • Issue date Jun 26, 2018
    • Dean G Grommet
    • E04 - BUILDING
  • Information Patent Grant

    Modular stairway
    • Patent number 9,212,491
    • Issue date Dec 15, 2015
    • Patrick J. Santini
    • E04 - BUILDING
  • Information Patent Grant

    Spiral box stair
    • Patent number 9,085,904
    • Issue date Jul 21, 2015
    • Larry James Hopper
    • E04 - BUILDING
  • Information Patent Grant

    Mounted stairway
    • Patent number 5,131,197
    • Issue date Jul 21, 1992
    • IMPO, Inc.
    • Joseph S. Varga
    • E04 - BUILDING
  • Information Patent Grant

    Unitary stairway
    • Patent number 4,535,871
    • Issue date Aug 20, 1985
    • The Laitram Corporation
    • James M. Lapeyre
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Circular ladder
    • Patent number 4,328,880
    • Issue date May 11, 1982
    • The Laitram Corporation
    • James M. Lapeyre
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Knock-down open riser stairway
    • Patent number 4,106,591
    • Issue date Aug 15, 1978
    • M. Cohen & Sons, Inc.
    • Allen Cohen
    • E04 - BUILDING
  • Information Patent Grant

    3851431
    • Patent number 3,851,431
    • Issue date Dec 3, 1974
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3834098
    • Patent number 3,834,098
    • Issue date Sep 10, 1974
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3467220
    • Patent number 3,467,220
    • Issue date Sep 16, 1969
    • E04 - BUILDING
  • Information Patent Grant

    3310132
    • Patent number 3,310,132
    • Issue date Mar 21, 1967
    • E04 - BUILDING
  • Information Patent Grant

    3216160
    • Patent number 3,216,160
    • Issue date Nov 9, 1965
    • E04 - BUILDING

Patents Applicationslast 30 patents

  • Information Patent Application

    Floating Modular Stair System
    • Publication number 20220349185
    • Publication date Nov 3, 2022
    • CityPost LLC
    • Nathan Adam Williams
    • E04 - BUILDING
  • Information Patent Application

    OPEN STAIR CASE WITH CENTER UNCUT STRINGER
    • Publication number 20160369514
    • Publication date Dec 22, 2016
    • DEAN G. GROMMET
    • E04 - BUILDING
  • Information Patent Application

    Spiral box stair
    • Publication number 20150101273
    • Publication date Apr 16, 2015
    • Larry James Hopper
    • E04 - BUILDING
  • Information Patent Application

    Stair tower module
    • Publication number 20110271613
    • Publication date Nov 10, 2011
    • Larry James Hopper
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...