Granted Patent
Utility
US 6,473,006 · App. 09/447,927
Method and apparatus for zoomed display of characters entered from a telephone keypad
Inventors:
Francis S. Yu, Alain Rossmann
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Nov 23, 1999
Inventors
Francis S. Yu
Alain Rossmann
Assignee (at issue)
Openwave 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.