195200 ⎘
Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time the elements being rotatable and bearing the symbols on a surface perpendicular to the axis of rotation
Device with multi-directional moving members
#2Device with multi-directional moving members
#3Timepiece with multiplication table display and method of teaching multiplication tables
#4Sentence wheel
#5Hyperbilirubinemia management calendar
#6Calculating clock (multiplication figure)
#7Method for Charting Astrological Events
#8Educational device
#9Arithmetic measurement system
#10Educational math toy
#11Study aid
#12Book with rotating device
#13Memory aid
#14Storytelling game and method of play