| B | SK | PERFORMING OPERATIONS; TRANSPORTING |
| B24 | KL | GRINDING; POLISHING |
| B24B | UKL | MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (by electro-erosion B23H; abrasive or related blasting B24C; electrolytic etching or polishing C25F 3/00); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS [2] |
| B24C | UKL | ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL |
| B24D | UKL | TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B 31/14; honing tools B24B 33/08; lapping tools B24B 37/11) |