using multiple (re-)boiler-condensers at different heights of the column

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Processes or apparatus using separation by rectification > using multiple (re-)boiler-condensers at different heights of the column

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.