Granted Patent
Utility
US 5,990,890 · App. 08/917,325
System for data entry and navigation in a user interface
Inventor:
Robert C. Etheredge
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Aug 25, 1997
Inventor
Robert C. Etheredge
Assignee (at issue)
Liberate Technologies
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.