Description: 342 / (20) With Signal Or Energy Processing (23) For Motive Power (29) For Electric Drive (29.5) Engine Starting
Hierarchy/Derived subclasses
CIPO searches
search just 342/29.5- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((342/29.5 <IN> CPC) <OR> (342/29.51 <IN> CPC))
This 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.