Canadian Subclass Details

Description: 182 / (19) Filters (105) Surface-Type (e.g., Screens) (115) Porous Stone

Hierarchy/Derived subclasses

182 / 19-> 105-> 115

CIPO search

search just 182/115

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.
Display:

Back