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James F. Kerr

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  • Croswell, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual track ladder with brake mechanism that is automatically applie...
    • Patent number 9,435,156
    • Issue date Sep 6, 2016
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Leveling leg for a ladder
    • Patent number 9,206,643
    • Issue date Dec 8, 2015
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Dual track ladder for use with mobile shelving
    • Patent number 9,051,779
    • Issue date Jun 9, 2015
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Guide track system and components thereof
    • Patent number 8,882,067
    • Issue date Nov 11, 2014
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Dual track ladder with brake mechanism that is automatically applie...
    • Patent number 8,622,171
    • Issue date Jan 7, 2014
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Dual track ladder with brake mechanism that is automatically applie...
    • Patent number 7,757,813
    • Issue date Jul 20, 2010
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Foldable dual track ladder
    • Patent number 6,619,427
    • Issue date Sep 16, 2003
    • Material Control, Inc.
    • James F. Kerr
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Dual track mounted pivoting ladder assembly
    • Patent number 5,653,307
    • Issue date Aug 5, 1997
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Dual track mounted ladder system
    • Patent number 5,480,002
    • Issue date Jan 2, 1996
    • Kerr; James F.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Dual track ladder
    • Patent number 5,413,191
    • Issue date May 9, 1995
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Wheeled ladder
    • Patent number 5,082,086
    • Issue date Jan 21, 1992
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ladder with warning gate
    • Patent number 5,080,192
    • Issue date Jan 14, 1992
    • Material Control, Inc.
    • James F. Kerr
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Shock mount telescoping conveyor belt cleaner
    • Patent number 4,535,883
    • Issue date Aug 20, 1985
    • Material Control, Inc.
    • James F. Kerr
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Telescoping conveyor belt cleaner
    • Patent number 4,533,037
    • Issue date Aug 6, 1985
    • Material Control, Inc.
    • James F. Kerr
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Damaged conveyor belt detector
    • Patent number 4,462,523
    • Issue date Jul 31, 1984
    • Material Control, Inc.
    • James F. Kerr
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents