Canadian Subclass Details

Description: 313 / (173) With Envelope (178) With Lead-In, Seal or Stem (178.5) Lead-in or Seal Composition

Hierarchy/Derived subclasses

313 / 173

-> 178

-> 178.5

CIPO search

search just 313/178.5

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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