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

Oleg B. Tretiakoff

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Portable device for the photographing of book pages

Photocopying – Projection printing and copying cameras – Copying both sides of original
Reexamination Certificate

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Portable print reading device for the blind

Education and demonstration – Communication aids for the handicapped
Reexamination Certificate

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Tactile display driven by shape memory wires

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

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Profile ID: LFUS-PAI-P-1669235

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