with external drive displacers

Full Title

Ericsson-type engines having open regenerative cycles controlled by valves > Displacer-type engines > having constant working volume > with external drive displacers

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

This code exists only in CPC.

Diff view requires codes present in both systems.

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