CPC Subgroup
F04B 27/1804 Full Title
Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders (multi-stage pumps specially adapted for elastic fluids F04B25/00) > having cylinders coaxial with, or parallel or inclined to, main shaft axis > Control > of pumps with stationary cylinders > by varying the relative positions of a swash plate and a cylinder block
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