Granted Patent
Utility
US 5,459,823 · App. 07/725,621
Graphics engine for true colour 2D graphics
Inventors:
Kia Silverbrook, James Robert Metcalf
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: Jul 3, 1991
Inventors
Kia Silverbrook
James Robert Metcalf
Assignees (at issue)
CANON KABUSHIKI KAISHA
Canon Information Systems Research Australia Pty. Ltd.
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.