• All sections
• H - Electricity
• H01H - Electric switchesrelaysselectorsemergency protective devices
• H01H 7/04 - Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with fluid timing means with flies, i.e. fan governors

Patent holdings for IPC class H01H 7/04

Total number of patents in this class: 3

10-year publication summary

Principal owners for this class