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Allen A. Caldwell

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  • Shakopee, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ladder tripod assembly and system
    • Patent number 11,795,760
    • Issue date Oct 24, 2023
    • Core Distribution, Inc.
    • Allen A. Caldwell
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Extendable / retractable ladder
    • Patent number 10,753,149
    • Issue date Aug 25, 2020
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Foldable ladder
    • Patent number 10,731,413
    • Issue date Aug 4, 2020
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Foldable ladder
    • Patent number 10,233,692
    • Issue date Mar 19, 2019
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Extendable / retractable ladder
    • Patent number 10,053,912
    • Issue date Aug 21, 2018
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Foldable ladder
    • Patent number 9,580,959
    • Issue date Feb 28, 2017
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Hinge for a telescoping stepladder
    • Patent number D767784
    • Issue date Sep 27, 2016
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • D25 - Building units and construction elements
  • Information Patent Grant

    Telescoping ladder with stabilizers
    • Patent number 9,416,591
    • Issue date Aug 16, 2016
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Collapsible five legged stepstool
    • Patent number D684278
    • Issue date Jun 11, 2013
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • D25 - Building units and construction elements
  • Information Patent Grant

    Extendable/retractable ladder
    • Patent number 8,225,906
    • Issue date Jul 24, 2012
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Step ladder
    • Patent number D624200
    • Issue date Sep 21, 2010
    • Core Distribution, Inc.
    • Mitchell I. Kieffer
    • D25 - Building units and construction elements

Patents Applicationslast 30 patents

  • Information Patent Application

    LADDER TRIPOD ASSEMBLY AND SYSTEM
    • Publication number 20210123302
    • Publication date Apr 29, 2021
    • CORE DISTRIBUTION, INC.
    • Allen A. Caldwell
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    FOLDABLE LADDER
    • Publication number 20190093428
    • Publication date Mar 28, 2019
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    EXTENDABLE / RETRACTABLE LADDER
    • Publication number 20190003254
    • Publication date Jan 3, 2019
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    EXTENDABLE / RETRACTABLE LADDER
    • Publication number 20180010388
    • Publication date Jan 11, 2018
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    FOLDABLE LADDER
    • Publication number 20170145745
    • Publication date May 25, 2017
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    FOLDABLE LADDER
    • Publication number 20160153231
    • Publication date Jun 2, 2016
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    TELESCOPING LADDER WITH STABILIZERS
    • Publication number 20160153232
    • Publication date Jun 2, 2016
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    EXTENDABLE / RETRACTABLE LADDER
    • Publication number 20120267197
    • Publication date Oct 25, 2012
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    EXTENDABLE / RETRACTABLE LADDER
    • Publication number 20100044155
    • Publication date Feb 25, 2010
    • CORE DISTRIBUTION, INC.
    • Mitchell I. Kieffer
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS