B31B 70/142 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

B31B 70/142

Full Title

Making flexible containers, e.g. envelopes or bags > Cutting, e.g. perforating, punching, slitting or trimming (cutting window openings B31B70/83)

This code exists only in CPC.

Diff view requires codes present in both systems.