Patent US 4969041A
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Patent number | US 4969041A (click link for details and documents via Google Patents) |
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Title | Embedment of data in a video signal |
Inventors | William J. O'Grady, Robert J. Dubner |
Company | Dubner Computer Systems, Inc. |
Filing date | 1988-09-23 |
Grant date | 1990-11-06 |