Granted Patent
Utility
US 4,797,836 · App. 06/932,805
Image orientation and animation using quaternions
Inventors:
Francis A. Witek, David E. Lake, Jr.
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Nov 19, 1986
Inventors
Francis A. Witek
David E. Lake, Jr.
Assignee (at issue)
GRASS VALLEY LIMITED
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.