Granted Patent
Utility
US 5,572,229 · App. 08/144,169
Head-mounted projection display system featuring beam splitter and method of making same
Inventor:
Ralph W. Fisher
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Oct 26, 1993
Inventor
Ralph W. Fisher
Assignee (at issue)
Evans & Sutherland Computer Corporation
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.