Granted Patent
Utility
US 6,532,291 · App. 08/955,933
Head tracking with limited angle output
Inventor:
David S. McGrath
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Oct 22, 1997
Inventor
David S. McGrath
Assignee (at issue)
Lake DSP Pty Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.