Granted Patent
Utility
US 6,184,481 · App. 08/219,888
Key switches for computer keyboards
Inventor:
S.L. CHEN
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Mar 30, 1994
Inventor
S.L. CHEN
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.