CPC Subgroup Additional Only
F02G 2242/42 having a single piston regenerative displacer attached to the piston, e.g. "Gifford-McMahon" engines
Full Title
Ericsson-type engines having open regenerative cycles controlled by valves > Piston-type engines > having a single piston regenerative displacer attached to the piston, e.g. "Gifford-McMahon" engines