Granted Patent
Utility
US 6,326,969 · App. 09/080,575
Emulating screen overlays by flip-mapping memory
Inventors:
Jim Helman, Mark Vickers
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: May 18, 1998
Inventors
Jim Helman
Mark Vickers
Assignee (at issue)
Liberate Technologies
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.