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CPC Subgroup Additional Only
F02G 2244/54

having two-cylinder twin systems, with compression in one cylinder and expansion in the other cylinder for each of the twin systems, e.g. "Finkelstein" engines

Full Title

Machines having two pistons > Double acting piston machines > having two-cylinder twin systems, with compression in one cylinder and expansion in the other cylinder for each of the twin systems, e.g. "Finkelstein" engines