Patent US 4319266A
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| Patent number | US 4319266A (click link for details and documents via Google Patents) |
|---|---|
| Title | Chroma keying system |
| Inventors | Richard S. Bannister |
| Company | The Grass Valley Group, Inc. |
| Filing date | 1980-12-19 |
| Grant date | 1982-03-09 |