Granted Patent
Utility
US 6,633,641 · App. 09/624,218
Key input device
Inventors:
Motoaki Mushika, Hiroyuki Konishi
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Jul 24, 2000
Inventors
Motoaki Mushika
Hiroyuki Konishi
Assignee (at issue)
SANYO ELECTRIC CO., 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.