Granted Patent
Utility
US 5,638,117 · App. 08/338,041
Interactive method and system for color characterization and calibration of display device
Inventors:
Peter G. Engeldrum, William J. Hilliard
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Nov 14, 1994
Inventors
Peter G. Engeldrum
William J. Hilliard
Assignee (at issue)
Sonnetech, Ltd.
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.