4. Education and demonstration
  5. Communication aids for the handicapped
  6. Tactile reading aid

David W. Kardos

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Apparatus and method utilizing bi-directional relative...

Education and demonstration – Communication aids for the handicapped – Tactile reading aid
Reexamination Certificate

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Extended refreshable tactile graphic array for scanned...

Computer graphics processing and selective visual display system – Display peripheral interface input device
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Refreshable braille reader

Education and demonstration – Communication aids for the handicapped – Tactile reading aid
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2754365

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