CPC Subgroup
F04D 17/167 Full Title
Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (F04D21/00 takes precedence) > Centrifugal pumps > for displacing without appreciable compression
F04D 17/167 Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (F04D21/00 takes precedence) > Centrifugal pumps > for displacing without appreciable compression