Granted Patent
Utility
US 6,636,164 · App. 09/471,919
Key structure for the user interface of an electrical device
Inventor:
Seppo Salminen
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Dec 23, 1999
Inventor
Seppo Salminen
Assignee (at issue)
Nokia Mobile Phones Ltd.
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.