Granted Patent
Utility
US 4,484,232 · App. 06/421,232
Method and circuit arrangement for contrast intensification
Inventor:
Uwe Gast
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Sep 22, 1982
Inventor
Uwe Gast
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.