Granted Patent
Utility
US 6,821,036 · App. 10/254,468
Keyboard allowing for simple, cost-effective production
Inventor:
Mitsuo Horiuchi
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Sep 25, 2002
Inventor
Mitsuo Horiuchi
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.