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Electric display media
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Patent number 7,432,942
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Issue date Oct 7, 2008
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Xerox Corporation
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Nicholas K. Sheridon
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G02 - OPTICS
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Twisting-cylinder display
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Patent number 6,497,942
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Issue date Dec 24, 2002
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Xerox Corporation
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Nicholas K. Sheridon
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Twisting-cylinder display
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Patent number 6,428,868
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Issue date Aug 6, 2002
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Xerox Corporation
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Nicholas K. Sheridon
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Tamper-evident electric paper
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Patent number 6,419,618
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Issue date Jul 16, 2002
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Xerox Corporation
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Jock D. MacKinlay
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Tamper-evident electric paper
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Patent number 6,303,211
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Issue date Oct 16, 2001
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Xerox Corporation
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Jock D. MacKinlay
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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