Granted Patent
Utility
US 4,157,533 · App. 05/854,955
Independent channel automatic gain control for self-scanning photocell array
Inventor:
Dale R. DuVall
Patented Case
View Patent ↗
Granted: Jun 5, 1979
Filed: Nov 25, 1977
Inventor
Dale R. DuVall
Assignee (at issue)
Recognition Equipment Incorporated
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.