| Reinigen allgemein | B08B |
| Reinigen von Fahrzeugen allgemein, z.B. Scheibenwischer | B60S |
| Inhibieren der Korrosion von Metallen durch anodischen oder kathodischen Schutz | C23F 13/00 |
| Cleaning in general | B08B |
| Cleaning of vehicles in general, e.g. windscreen wipers | B60S |
| Inhibiting corrosion of metals by anodic or cathodic protection | C23F 13/00 |