Granted Patent
Utility
US 5,055,922 · App. 07/490,050
Color TV projection lens system
Inventor:
Richard J. Wessling
Patented Case
View Patent ↗
Granted: Oct 8, 1991
Filed: Mar 7, 1990
Inventor
Richard J. Wessling
Assignee (at issue)
U.S. Precision Lens Incorporated
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.