Granted Patent
Utility
US 5,936,615 · App. 08/712,970
Image-based touchscreen
Inventor:
Keith Waters
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Sep 12, 1996
Inventor
Keith Waters
Assignee (at issue)
Digital Equipment 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.