Granted Patent
Utility
US 6,340,803 · App. 09/768,307
Computer keyswitch
Inventor:
Tung Hsueh Li
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Jan 25, 2001
Inventor
Tung Hsueh Li
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.