Granted Patent
Utility
US 6,615,283 · App. 09/479,218
Keyboard system
Inventor:
Chunn-Cherh Kuo
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Jan 7, 2000
Inventor
Chunn-Cherh Kuo
Assignee (at issue)
Silitek 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.