CPC Subgroup
B30B 11/20 Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
Full Title
Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses (for clay or mixtures containing cement B28B; for plastics materials B29) > Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
1 direct subcode
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