Granted Patent
Utility
US 5,467,404 · App. 07/924,095
Method and apparatus for contrast enhancement
Inventors:
Pieter Vuylsteke, Emile Schoeters
Patented Case
View Patent ↗
Granted: Nov 14, 1995
Filed: Aug 3, 1992
Inventors
Pieter Vuylsteke
Emile Schoeters
Assignee (at issue)
Agfa-Gevaert NV
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.