Description: 342 / (20) With Signal Or Energy Processing (23) For Motive Power (29) For Electric Drive (29.3) Brushing or Washing (29.31) Window Washers or Wipers
Hierarchy/Derived subclasses
CIPO search
search just 342/29.31This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find
patents in those subclasses.