CPC Subgroup
G09B 1/40 to form symbols or signs by appropriate arrangement
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 (puzzle-games A63F9/00; advertising or displaying in general G09F) > comprising elements to be used without a special support > to form symbols or signs by appropriate arrangement