the elements being slidable

Full Title

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 slidable

Classification Context

Section:

PHYSICS

Class:

EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS

Subclass:

EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS