CPC Subgroup
B28B 7/368 Full Title
Moulds; Cores; Mandrels (specially adapted for the production of the tubular articles B28B21/00; ) > Linings or coatings, (lubricating surfaces of moulds, cores or mandrels B28B7/38)
B28B 7/368 Moulds; Cores; Mandrels (specially adapted for the production of the tubular articles B28B21/00; ) > Linings or coatings, (lubricating surfaces of moulds, cores or mandrels B28B7/38)