Description: 299 / (15) By Change Of Pressure And/Or Direction, Effected By Terminal Fluid Handling Means (Static) (25) With Sudden Change of Pressure
Hierarchy/Derived subclasses
CIPO searches
search just 299/25- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((299/25 <IN> CPC) <OR> (299/26 <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.