Patents by Inventor David Douglas Barden

David Douglas Barden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Diagnostic probe
    Patent number: D1022738
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: April 16, 2024
    Assignee: Power Probe Group, Inc.
    Inventor: David Douglas Barden
  • Electricity measuring apparatus
    Patent number: D1054305
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: December 17, 2024
    Assignee: Power Probe Group, Inc.
    Inventor: David Douglas Barden