E04H 9/021 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

E04H 9/021

Full Title

Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate (foundation aspects E02D) > withstanding earthquake or sinking of ground (foundations E02D27/34)

Of 5 combined children, 0 exist in both systems.

5 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.

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