Patents by Inventor Bob Combes

Bob Combes 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).

  • Frequency converter
    Patent number: D741259
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: October 20, 2015
    Assignee: ABB Technology Oy
    Inventors: Mohammad Siddiqui, Guy Lamb, David Greensmith, Bob Combes