Canadian Subclass Details

Description: 182 / (19) Filters (65) Cylindrical With Radial Flow (e.g., Cartridges) (70) Spirally Wound (71) Metal Ribbon

Hierarchy/Derived subclasses

182 / 19

-> 65

-> 70

-> 71

CIPO search

search just 182/71

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.