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

Dietmar Litschel

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Apparatus for producing elevations which can be detected in...

Printing – Embossing or penetrating – Selective machines
Reexamination Certificate

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Device for representing relief items

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

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Keyboard

Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Patent

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Profile ID: LFUS-PAI-P-1336961

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