Granted Patent
Utility
US 4,660,083 · App. 06/792,468
Video display system with stabilized background level
Inventor:
John K. Allen
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Oct 29, 1985
Inventor
John K. Allen
Assignee (at issue)
RCA Corporation
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.