Granted Patent
Utility
US 6,270,268 · App. 09/590,257
Keyboard apparatus
Inventor:
Shigeru Kawabe
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Jun 9, 2000
Inventor
Shigeru Kawabe
Assignee (at issue)
NEC 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.