Granted Patent
Utility
US 6,507,336 · App. 09/572,673
Keyboard for a handheld computer
Inventor:
E. Michael Lunsford
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: May 16, 2000
Inventor
E. Michael Lunsford
Assignee (at issue)
PALM FIRM CORPORATION
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.