David M. Roberts

Person

  • Saint Paul, MN, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker stand

    • Patent number 11,856,347
    • Issue date Dec 26, 2023
    • David M. Roberts
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Folding base

    • Patent number 10,584,824
    • Issue date Mar 10, 2020
    • Jeffrey A. Roberts
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Boom stand stacking counterweights

    • Patent number 9,516,400
    • Issue date Dec 6, 2016
    • Jeffrey A. Roberts
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Nitride sustain

    • Patent number 9,000,283
    • Issue date Apr 7, 2015
    • Jeffrey A. Roberts
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS