4. Card, picture, or sign exhibiting
  5. Changing exhibitor
  6. Alphanumeric device

ReaderVision, Inc.

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Internally illuminated matrix sign

Card – picture – or sign exhibiting – Changing exhibitor – Alphanumeric device
Patent

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Scanned flip-disk sign improvements

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent

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Profile ID: LFUS-PAI-P-1012904

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