Granted Patent
Utility
US 4,572,506 · App. 06/500,981
Raster line comparator circuit for video game
Inventor:
David W. DiOrio
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Jun 3, 1983
Inventor
David W. DiOrio
Assignee (at issue)
Commodore Business Machines, 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.