IPC Subgroup
E21D 15/58 Devices for setting props
Introduced: September 1968
Last revised: January 2006
Full Title
Props; Chocks > Devices for setting props
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
2 direct subcodes
Child Classifications
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- E21D 15/582 for mechanical props
- E21D 15/59 for hydraulic, pneumatic, or hydraulic-pneumatic props