IPC Subgroup
E21C 45/02 Means for generating pulsating fluid jets
Introduced: January 1990
Last revised: January 2006
Full Title
Methods of hydraulic mining; Hydraulic monitors > Means for generating pulsating fluid jets
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING
2 direct subcodes
Child Classifications
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- E21C 45/04 by use of highly pressurised liquid
- E21C 45/06 by use of compressed gases