TREA

Combinations of audio and projected visual presentation

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Industry

  • CPC
  • G09B5/067
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Parent Industries

GPHYSICS G09Cryptography, education, displays G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE MODELS PLANETARIA GLOBES MAPS DIAGRAMS G09B5/00Electrically-operated educational appliances

Current Industry

G09B5/067Combinations of audio and projected visual presentation
Industries