H04J 14/0221 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

H04J 14/0221

Full Title

Optical multiplex systems > Wavelength-division multiplex systems

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.