• 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 1/30 - 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 wherein the elements are adapted to be arranged in co-operation with the support to form symbols

Patent holdings for IPC class G09B 1/30

Total number of patents in this class: 4

10-year publication summary

Principal owners for this class