Patent US 4951144A
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| Patent number | US 4951144A (click link for details and documents via Google Patents) |
|---|---|
| Title | Recursive video blur effect |
| Inventors | Philip A. Des Jardins |
| Company | The Grass Valley Group, Inc. |
| Filing date | 1989-04-12 |
| Grant date | 1990-08-21 |