Granted Patent
Utility
US 6,366,277 · App. 09/417,872
Contaminant processing system for an acoustic touchscreen
Inventor:
Don Armstrong
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Oct 13, 1999
Inventor
Don Armstrong
Assignee (at issue)
ELO TouchSystems, 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.