IPC Main Group
E21C 45/00 Methods of hydraulic mining; Hydraulic monitors
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING
Related Keywords
mining or quarrying by HYDRAULIC(S) pressurehydraulic MONITORS for obtaining minerals
2 direct subcodes
Child Classifications
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- E21C 45/02 Means for generating pulsating fluid jets
- E21C 45/08 Automatic or remote control of hydraulic monitors