CPC Subgroup
E21C 45/02 Means for generating pulsating fluid jets
Full Title
Methods of hydraulic mining; Hydraulic monitors (E21C25/60 takes precedence) > Means for generating pulsating fluid jets
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