Granted Patent
Utility
US 6,532,021 · App. 08/673,960
Opaque screen visualizer
Inventors:
Bruce Tognazzini, Jakob Nielsen
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Jul 1, 1996
Inventors
Bruce Tognazzini
Jakob Nielsen
Assignee (at issue)
Sun Microsystems 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.