Granted Patent
Utility
US 4,873,399 · App. 07/286,700
Ink-on-glass digitizer tablet and method of construction
Inventor:
Waldo L. Landmeier
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Dec 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.