Granted Patent
Utility
US 4,915,487 · App. 07/305,000
Heads up display for night vision goggle
Inventors:
James RIDDELL, David C. Lambertson
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Feb 1, 1989
Inventors
James RIDDELL
David C. Lambertson
Assignee (at issue)
Systems Research Laboratories, Inc.
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.