• All sections
• G - Physics
• G11B - Information storage based on relative movement between record carrier and transducer
• G11B 23/40 - Identifying or analogous means applied to, or incorporated in, the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader or photograph

Patent holdings for IPC class G11B 23/40

Total number of patents in this class: 83

10-year publication summary

Principal owners for this class