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Sam Chang

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  • New Taipei, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric meter
    • Patent number D813697
    • Issue date Mar 27, 2018
    • APPA Technology Corp.
    • Sam Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Electric meter
    • Patent number D787353
    • Issue date May 23, 2017
    • APPA Technology Corp.
    • Sam Chang
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Multi-functional infrared thermometer
    • Patent number D724449
    • Issue date Mar 17, 2015
    • APPA Technology Corp.
    • Sam Chang
    • D10 - Measuring, testing, or signalling instruments