Granted Patent
Utility
US 4,965,668 · App. 07/433,882
Adaptive rounder for video signals
Inventors:
John Abt, James A. Delwiche
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Nov 9, 1989
Inventors
John Abt
James A. Delwiche
Assignee (at issue)
GRASS VALLEY LIMITED
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.