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Caselle Torinese, IT
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Interface module for superimposing alphanumeric characters upon RGB...
Patent number
4,800,423
Issue date
Jan 24, 1989
Sip- Societa Italiana per L'Esercizio Delle Telecomunicazioni S.P.A.
Silvano Appiano
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS