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CPC Subgroup
B31B 70/14

Cutting, e.g. perforating, punching, slitting or trimming (cutting window openings B31B70/83)

Full Title

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

6 direct subcodes

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