F04C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
F04C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
F04C29/00
Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
F04C29/00
Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00