DIFF Subgroup
E21C 45/02 Means for generating pulsating fluid jets
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Methods of hydraulic mining; Hydraulic monitors > Means for generating pulsating fluid jets
CPC:
Methods of hydraulic mining; Hydraulic monitors (E21C25/60 takes precedence) > Means for generating pulsating fluid jets
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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