Granted Patent
Utility
US 4,393,322 · App. 06/178,317
Image intensifier faceplate
Inventor:
Walter P. Siegmund
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Aug 15, 1980
Inventor
Walter P. Siegmund
Assignee (at issue)
Warner Lambert Technologies, 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.