Patents by Inventor Matthew K. Engstrom

Matthew K. Engstrom 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).

  • Earphone portion
    Patent number: D557253
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: December 11, 2007
    Assignee: Shure Acquisitions Holdings, Inc.
    Inventors: Matthew K. Engstrom, Scott M. Belliveau, Patrick M. Flanagan, Jeffery S. Kunkler, Anne C. Moser, Daniel Perez, Aleksey Pirkhalo, Kenneth M. Ross, Ki Bok Song
  • Earphone portion
    Patent number: D557254
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: December 11, 2007
    Assignee: Shure Acquisition Holdings, Inc
    Inventors: Matthew K. Engstrom, Scott M. Belliveau, Patrick M. Flanagan, Jeffery S. Kunkler, Anne C. Moser, Daniel Perez, Aleksey Pirkhalo, Kenneth M. Ross, Ki Bok Song