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John Michael Van Coller

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  • Braamfontein, ZA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Spark gap protection device
    • Patent number 8,018,705
    • Issue date Sep 13, 2011
    • University of Witwatersrand
    • Aristidis Michalopoulos
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Spark gap protection device
    • Patent number 7,787,230
    • Issue date Aug 31, 2010
    • University of Wirwatersrand, Johannesburg
    • Aristidis Michalopoulos
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    SPARK GAP PROTECTION DEVICE
    • Publication number 20100296219
    • Publication date Nov 25, 2010
    • University of Witwatersrand
    • Aristidis Michalopoulos
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Spark Gap Protection Device
    • Publication number 20080310072
    • Publication date Dec 18, 2008
    • University of Witwatersrand
    • Aristidis Michalopoulos
    • H01 - BASIC ELECTRIC ELEMENTS