Subclass 1/30: Cleaning of vehicles (by apparatus not integral with vehicle B60S 3/00; cleaning in general B08B; de-icing of aircraft B64D; heating arrangements specially adapted for transparent or reflecting areas H05B 3/84) Cleaning windscreens, windows, or optical devices Wipers or the like, e.g. scrapers characterised by a plurality of wipers (B60S 1/06 takes precedence) arranged both outside and inside