Granted Patent
Utility
US 6,836,404 · App. 10/676,405
Handheld display and keyboard
Inventor:
Matias Duarte
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Oct 1, 2003
Inventor
Matias Duarte
Assignee (at issue)
Danger, 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.