F28F 2009/222 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup Additional Only

F28F 2009/222

Full Title

Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings > Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

This code exists only in CPC.

Diff view requires codes present in both systems.

View in CPC →