Patents by Inventor Dave Summerfield

Dave Summerfield 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).

  • Portable phone
    Patent number: D425058
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: May 16, 2000
    Assignee: Mitsubishi Electric France
    Inventors: Kouji Kodera, Steven Hughes, Nigel Newby, Dave Summerfield