• All sections
• G - Physics
• G09B - Educational or demonstration appliances; appliances for teaching, or communicating with, the blind, deaf or mute; models; planetaria; globes; maps; diagrams
• G09B 1/34 - 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 comprising elements to be used without a special support the elements to be placed loosely in adjacent relationship

Patent holdings for IPC class G09B 1/34

Total number of patents in this class: 11

10-year publication summary

Principal owners for this class