• All sections
• B - Performing operationstransporting
• B61L - Guiding railway trafficensuring the safety of railway traffic
• B61L 3/12 - Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically using magnetic or electrostatic inductionDevices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically using radio waves

Patent holdings for IPC class B61L 3/12

Total number of patents in this class: 386

10-year publication summary

Principal owners for this class