Granted Patent
Utility
US 6,400,284 · App. 09/865,595
Finger operated module for generating encoding signals
Inventor:
Chih-Hsiung Wu
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: May 29, 2001
Inventor
Chih-Hsiung Wu
Assignee (at issue)
Primax Electronics Ltd.
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.