Granted Patent
Utility
US 6,648,530 · App. 10/085,320
Light emitting keyed keyboard
Inventors:
Nobuyuki Kamei, Tohru Nakanishi, Akihiko Kitanaka
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Feb 28, 2002
Inventors
Nobuyuki Kamei
Tohru Nakanishi
Akihiko Kitanaka
Assignee (at issue)
International Business Machines 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.