4. Office supplies; artists and teachers materials
  5. Teaching material
  6. Sensory feedback, e.g., audio-visual teaching machine

Chi K. Leung

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Electronic educational game for the teaching of children

Office supplies; artists and teachers materials – Teaching material – Sensory feedback – e.g. – audio-visual teaching machine
Patent

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Talking-teaching clock toy

Office supplies; artists and teachers materials – Teaching material – Demonstrator or exhibitor
Patent

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Profile ID: LFUS-PAI-P-133093

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