Granted Patent
Utility
US 5,714,720 · App. 08/503,409
High efficiency passive pointer digitizer system
Inventor:
Waldo L. Landmeier
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Jul 15, 1995
Inventor
Waldo L. Landmeier
Assignee (at issue)
CalComp 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.