TREA

John R. Christianson

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  • Waukesha, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vial with improved visibility for level
    • Patent number 12,031,845
    • Issue date Jul 9, 2024
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Level including removable end caps
    • Patent number 11,740,082
    • Issue date Aug 29, 2023
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Vial with improved visibility for level
    • Patent number 11,506,491
    • Issue date Nov 22, 2022
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Level including removable end caps
    • Patent number 11,346,664
    • Issue date May 31, 2022
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Vial with improved visibility for level
    • Patent number 10,823,561
    • Issue date Nov 3, 2020
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Level including removable end caps
    • Patent number 10,697,770
    • Issue date Jun 30, 2020
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Level and level-straightedge system
    • Patent number 10,281,274
    • Issue date May 7, 2019
    • Milwaukee Electric Tool Corporation
    • Daniel L. Block
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Level including removable end caps
    • Patent number 9,909,870
    • Issue date Mar 6, 2018
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Angular indicator tool
    • Patent number 9,347,774
    • Issue date May 24, 2016
    • Milwaukee Electric Tool Corporation
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Angular indicator tool
    • Patent number D723954
    • Issue date Mar 10, 2015
    • Empire Level Mfg. Corp.
    • John Christianson
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Box level
    • Patent number 8,745,885
    • Issue date Jun 10, 2014
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Level with a magnet-mounting structure
    • Patent number 8,413,342
    • Issue date Apr 9, 2013
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Box level
    • Patent number 8,375,591
    • Issue date Feb 19, 2013
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Box level
    • Patent number 8,291,604
    • Issue date Oct 23, 2012
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Box level
    • Patent number 8,291,605
    • Issue date Oct 23, 2012
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Casing mount for a cylindrical vial
    • Patent number 8,011,109
    • Issue date Sep 6, 2011
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Torpedo level
    • Patent number D628914
    • Issue date Dec 14, 2010
    • Empire Level Mfg. Corp.
    • Charles Dunn Kim
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Vial-mounting structure
    • Patent number 7,832,112
    • Issue date Nov 16, 2010
    • Empire Level Mfg. Co.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Box level
    • Patent number D623544
    • Issue date Sep 14, 2010
    • Empire Level Mfg. Co.
    • Charles Dunn Kim
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Side brace for central-vial region of a box level
    • Patent number D618120
    • Issue date Jun 22, 2010
    • Empire Level Mfg. Co.
    • Charles Dunn Kim
    • D10 - Measuring, testing, or signalling instruments

Patents Applicationslast 30 patents

  • Information Patent Application

    Vial with Improved Visibility for Level
    • Publication number 20240318960
    • Publication date Sep 26, 2024
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Vial with Improved Visibility for Level
    • Publication number 20230083569
    • Publication date Mar 16, 2023
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Level Including Removable End Caps
    • Publication number 20220260370
    • Publication date Aug 18, 2022
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Vial with Improved Visibility for Level
    • Publication number 20210025704
    • Publication date Jan 28, 2021
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Level Including Removable End Caps
    • Publication number 20200318961
    • Publication date Oct 8, 2020
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Vial with Improved Visibility for Level
    • Publication number 20180347977
    • Publication date Dec 6, 2018
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Level Including Removable End Caps
    • Publication number 20180156613
    • Publication date Jun 7, 2018
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Level and Level-Straightedge System
    • Publication number 20170370718
    • Publication date Dec 28, 2017
    • Milwaukee Electric Tool Corporation
    • Daniel L. Block
    • G01 - MEASURING TESTING
  • Information Patent Application

    LEVEL INCLUDING REMOVABLE END CAPS
    • Publication number 20160138918
    • Publication date May 19, 2016
    • Milwaukee Electric Tool Corporation
    • Roger D. Neitzell
    • G01 - MEASURING TESTING
  • Information Patent Application

    Angular Indicator Tool
    • Publication number 20150075017
    • Publication date Mar 19, 2015
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    Method for Providing Instruction Manual for Using a Measuring Tool
    • Publication number 20140339295
    • Publication date Nov 20, 2014
    • Empire Level Mfg. Corp.
    • John Christianson
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Box Level
    • Publication number 20130167388
    • Publication date Jul 4, 2013
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    Level with a Magnet-Mounting Structure
    • Publication number 20120222321
    • Publication date Sep 6, 2012
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    BOX LEVEL
    • Publication number 20110265338
    • Publication date Nov 3, 2011
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    Method for Manufacturing High-Visibility Measurement Tool
    • Publication number 20110108428
    • Publication date May 12, 2011
    • Empire Level Mfg. Corp.
    • JOHN R. CHRISTIANSON
    • G01 - MEASURING TESTING
  • Information Patent Application

    BOX LEVEL
    • Publication number 20110099824
    • Publication date May 5, 2011
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    BOX LEVEL
    • Publication number 20110099823
    • Publication date May 5, 2011
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    Casing Mount for a Cylindrical Vial
    • Publication number 20100218391
    • Publication date Sep 2, 2010
    • Empire Level Mfg. Corp.
    • John Christianson
    • G01 - MEASURING TESTING
  • Information Patent Application

    Vial-Mounting Structure
    • Publication number 20100115780
    • Publication date May 13, 2010
    • EMPIRE LEVEL MFG. CO.
    • John Christianson
    • G01 - MEASURING TESTING