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John Holtzman

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  • St. Louis, MO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Charger extension device
    • Patent number 11,594,896
    • Issue date Feb 28, 2023
    • John Holtzman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Charger extension device
    • Patent number 11,527,856
    • Issue date Dec 13, 2022
    • John Holtzman
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Charger extension device
    • Patent number 11,081,848
    • Issue date Aug 3, 2021
    • John Holtzman
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    CHARGER EXTENSION DEVICE
    • Publication number 20210359479
    • Publication date Nov 18, 2021
    • John Holtzman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    CHARGER EXTENSION DEVICE
    • Publication number 20210257842
    • Publication date Aug 19, 2021
    • John Holtzman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    CHARGER EXTENSION DEVICE
    • Publication number 20210119394
    • Publication date Apr 22, 2021
    • John Holtzman
    • H01 - BASIC ELECTRIC ELEMENTS