Granted Patent
Utility
US 4,584,556 · App. 06/684,168
Ratio comparator for digital signals
Inventor:
Steven S. Chan
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Dec 21, 1984
Inventor
Steven S. Chan
Assignee (at issue)
Ampex 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.