Patent US 4797836A
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| Patent number | US 4797836A (click link for details and documents via Google Patents) |
|---|---|
| Title | Image orientation and animation using quaternions |
| Inventors | Francis A. Witek, David E. Lake Jr. |
| Company | The Grass Valley Group, Inc. |
| Filing date | 1986-11-19 |
| Grant date | 1989-01-10 |