Granted Patent
Utility
US 5,568,571 · App. 07/989,820
Image enhancement system
Inventors:
Donald Willis, John E. Brooks, Hosni Adra, Hsieh S. Hou
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Dec 14, 1992
Inventors
Donald Willis
John E. Brooks
Hosni Adra
Hsieh S. Hou
Assignee (at issue)
University Microfilms, Inc.
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.