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Video image creation systems
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Patent number 5,276,788
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Issue date Jan 4, 1994
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Quantel Limited
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Alan L. Stapleton
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Video image creation systems
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Patent number 4,931,956
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Issue date Jun 5, 1990
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Quantel Limited
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Alan L. Stapleton
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Video image creation
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Patent number 4,775,858
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Issue date Oct 4, 1988
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Quantel Limited
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Alan L. Stapleton
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G06 - COMPUTING CALCULATING COUNTING
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Graphic simulation system
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Patent number 4,766,429
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Issue date Aug 23, 1988
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Quantel Limited
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Alan L. Stapleton
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS