David F. Ma

Person

  • West Palm Beach, FL, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Voice spelling in an audio-only interface

    • Patent number 6,975,986
    • Issue date Dec 13, 2005
    • International Business Machines Corporation
    • Matthew W. Hartley
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    Voice spelling in an audio-only interface

    • Publication number 20020184035
    • Publication date Dec 5, 2002
    • International Business Machines Corporation
    • Matthew W. Hartley
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS