Granted Patent
Utility
US 4,616,220 · App. 06/524,904
Graphics display comparator for multiple bit plane graphics controller
Inventors:
Paul Grunewald, Roy L. Blanch, James R. Schrage
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Aug 22, 1983
Inventors
Paul Grunewald
Roy L. Blanch
James R. Schrage
Assignee (at issue)
Burroughs, 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.