IPC Subgroup
E21F 15/02 Supporting means, e.g. shuttering, for filling-up materials
Introduced: September 1968
Last revised: January 2006
Full Title
Methods or devices for placing filling-up materials in underground workings > Supporting means, e.g. shuttering, for filling-up materials
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
1 direct subcode
Child Classifications
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- E21F 15/04 Stowing mats; Goaf wire netting; Partition walls