Granted Patent
Utility
US 5,357,372 · App. 07/864,863
Ultra-compact, wide field of view virtual image display optical system
Inventors:
Chungte W. Chen, Ronald G. Hegg
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Apr 7, 1992
Inventors
Chungte W. Chen
Ronald G. Hegg
Assignee (at issue)
Hughes Aircraft Company
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.