H05K 3/4644 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

H05K 3/4644

Full Title

Apparatus or processes for manufacturing printed circuits > Manufacturing multilayer circuits

Of 9 combined children, 0 exist in both systems.

9 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.