Granted Patent
Utility
US 6,278,442 · App. 09/106,585
Hand-held electronic device with a keyboard optimized for use with the thumbs
Inventors:
Jason T. Griffin, John A. Holmes, Mihal Lazaridis, Herb Little, Harry R. Major
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Jun 29, 1998
Inventors
Jason T. Griffin
John A. Holmes
Mihal Lazaridis
Herb Little
Harry R. Major
Assignee (at issue)
RESEARCH IN MOTION LIMITED
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.