BLEACHING, e.g. OPTICAL BLEACHING, DRY-CLEANING, OR WASHING FIBRES, THREADS, YARNS, FABRICS, FEATHERS, OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS (see Fulltext... Hierarchy... Expanded...D06C, Fulltext... Hierarchy... Expanded...D06F for mechanical matters; treatment of fibres or filaments of glass, mineral wool, or slag wool Fulltext... Hierarchy... Expanded...C03; chemical treatment of fibrous material to obtain fibres for spinning Fulltext... Hierarchy... Expanded...D01; bleaching paper pulp or cotton linters Fulltext... Hierarchy... Expanded...D21) |