Granted Patent
Utility
US 4,206,314 · App. 05/933,569
Graphic digitizer
Inventors:
Richard Wiley Prugh, Brownlow J. Fadden
Patented Case
View Patent ↗
Granted: Jun 3, 1980
Filed: Aug 14, 1978
Inventors
Richard Wiley Prugh
Brownlow J. Fadden
Assignee (at issue)
GTCO 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.