Granted Patent
Utility
US 5,036,259 · App. 07/621,489
Dynamic focus system for CRT display
Inventors:
Leroy A. Sutton, Norman E. Phoenix
Patented Case
View Patent ↗
Granted: Jul 30, 1991
Filed: Nov 30, 1990
Inventors
Leroy A. Sutton
Norman E. Phoenix
Assignee (at issue)
Zenith Electronics LLC
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.