Granted Patent
Utility
US 5,739,955 · App. 08/776,779
Head mounted display optics
Inventor:
Ian Peter Marshall
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Feb 10, 1997
Inventor
Ian Peter Marshall
Assignee (at issue)
Virtuality (IP) 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.