Granted Patent
Utility
US 5,408,060 · App. 08/267,855
Illuminated pushbutton keyboard
Inventor:
Jari Muurinen
Patented Case
View Patent ↗
Granted: Apr 18, 1995
Filed: Jun 29, 1994
Inventor
Jari Muurinen
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.