Granted Patent
Utility
US 6,528,741 · App. 09/920,040
Text entry on portable device
Inventor:
David P. Walker
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Aug 1, 2001
Inventor
David P. Walker
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.