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PCE
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CPC Subgroup
F04C 18/24

of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions

Full Title

Rotary-piston pumps specially adapted for elastic fluids (with fluid ring or the like F04C19/00; rotary-piston pumps in which the working-fluid is exclusively displaced by one or more reciprocating pistons F04B) > of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions

2 direct subcodes

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