Canadian Subclass Details

Description: 182 / (19) Filters (93) Depth-Type (e.g., Sand Beds) (94) With Graded Layers

Hierarchy/Derived subclasses

182 / 19-> 93-> 94

CIPO search

search just 182/94

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.
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