Granted Patent
Utility
US 4,194,839 · App. 05/807,507
Circuit arrangement for recognizing and adjusting color components
Inventor:
Hans-Georg Knop
Patented Case
View Patent ↗
Granted: Mar 25, 1980
Filed: Jun 17, 1977
Inventor
Hans-Georg Knop
Assignee (at issue)
Dr. Ing. Rudolf Hell GmbH
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.