Granted Patent
Utility
US 5,938,009 · App. 09/138,651
Key switch for a keyboard
Inventor:
Gear Huang
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Aug 24, 1998
Inventor
Gear Huang
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.