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Mark Donaldson

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  • Rue St. Germain, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Noise cancellation earphone
    • Patent number 8,571,227
    • Issue date Oct 29, 2013
    • Phitek Systems Limited
    • Mark Donaldson
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    MEDIA ENHANCEMENT MODULE
    • Publication number 20170347064
    • Publication date Nov 30, 2017
    • Phitek systems Limited
    • MARK DONALDSON
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    MEDIA ENHANCEMENT MODULE
    • Publication number 20090307730
    • Publication date Dec 10, 2009
    • Mark Donaldson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE