73779344
Feb 6, 1989
May 28, 1991
LEARNING SYSTEMS COMPRISING CASSETTE PLAYERS, CONTROL UNITS, ELECTRONIC SENSOR FACE MASKS AND PRERECORDED AUDIO CASSETTES, DESIGNED TO FACILITATE LEARNING THROUGH MONITORING BODILY FUNCTIONS
Electrical and Scientific ApparatusSERVICES IN CONDUCTING SEMINARS AND TRAINING SESSIONS IN THE USE OF SPECIALIZED EDUCATIONAL MATERIALS
Education and Entertainment