Granted Patent
Utility
US 4,853,497 · App. 07/208,467
Shielding techique for digitizers
Inventor:
Waldo L. Landmeier
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Jun 20, 1988
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.