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Christopher J. Ludewig

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  • Northfield, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multiple network mode selection devices
    • Patent number 11,751,129
    • Issue date Sep 5, 2023
    • CalAmp Corp.
    • Somu Ramiah
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Multiple network mode selection devices
    • Patent number 10,932,186
    • Issue date Feb 23, 2021
    • CalAmp Corp.
    • Somu Ramiah
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Multiple network mode selection devices
    • Patent number 10,219,205
    • Issue date Feb 26, 2019
    • CalAmp Corp.
    • Somu Ramiah
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Battery charger
    • Patent number 5,689,171
    • Issue date Nov 18, 1997
    • E.F. Johnson Company
    • Christopher J. Ludewig
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Antenna connector for a portable radio
    • Patent number 5,577,269
    • Issue date Nov 19, 1996
    • E.F. Johnson Company
    • Christopher J. Ludewig
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents