Adjustable interactive audio training system
Apparatus for learning by the super-learning method
Baby entertainment and learning apparatus for highchairs
Educational 911 training device
Educational apparatus with automatic terminal identification
Electrical educational device
Electronic audio learning apparatus
Interactive audio teaching aid
Interactive responsive apparatus with visual indicia, command co
Low-cost sound related trainer
Method of recording and reproducing subliminal signals that are
Method of teaching/learning a part of a multi-part musical compo
Methods for controlling reciting time of language learning devic
Multi-purpose, universally applicable re-recordable, audible, me
Multi-purpose, universally applicable re-recordable, audible, me
Multimode recording and transmitting apparatus and its use...
Multiple segment nonsequential recording
Multiple segment nonsequential recording
Musical cube
Prenatal learning device and method