IPC Subgroup
E21F 17/04 Distributing means for power supply
Introduced: September 1968
Last revised: January 2006
Full Title
Methods or devices for use in mines or tunnels, not covered elsewhere > Distributing means for power supply
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
3 direct subcodes
Child Classifications
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- E21F 17/06 Distributing electric power; Cable networks; Conduits for cables
- E21F 17/08 Distributing hydraulic power; Pipe networks for hydraulic liquid
- E21F 17/1 Distributing pneumatic power; Pipe networks for compressed air