Granted Patent
Utility
US 6,661,408 · App. 09/814,842
Touch screen capable of isolating noise signals
Inventor:
Chi-Ruey Chen
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Mar 23, 2001
Inventor
Chi-Ruey Chen
Assignee (at issue)
eTurboTouch Technology Inc.
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.