Granted Patent
Utility
US 5,875,428 · App. 08/883,686
Reading system displaying scanned images with dual highlights
Inventors:
Raymond C. Kurzweil, Firdaus Bhathena
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jun 27, 1997
Inventors
Raymond C. Kurzweil
Firdaus Bhathena
Assignee (at issue)
Kurzweil Educational Systems, 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.