Granted Patent
Utility
US 4,698,681 · App. 06/774,671
Dual intensity video circuit
Inventors:
Joseph Kadlec, Kenneth W. Kociolek
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Sep 11, 1985
Inventors
Joseph Kadlec
Kenneth W. Kociolek
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.