• All sections
• H - Electricity
• H01H - Electric switchesrelaysselectorsemergency protective devices
• H01H 21/28 - Operating parts, e.g. handle biased to return to original position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift

Patent holdings for IPC class H01H 21/28

Total number of patents in this class: 60

10-year publication summary

Principal owners for this class