Granted Patent
Utility
US 6,812,862 · App. 09/856,736
Keyboard for an electronic device
Inventor:
Mark Dempsey
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Jul 3, 2001
Inventor
Mark Dempsey
Assignee (at issue)
Psion Digital 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.