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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
F28D 9/0012

Full Title

Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.