Granted Patent
Utility
US 4,426,591 · App. 06/175,112
Adaptive comparator
Inventor:
Donald R. Cargille
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Aug 4, 1980
Inventor
Donald R. Cargille
Assignee (at issue)
Hughes Aircraft Company
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.