Canadian Subclass Details

Description: 28 / (29) Strands (Process, Product, Apparatus) (50) Handling (55) Strand Cleaning (56) Wiper Blade or Restrictor

Hierarchy/Derived subclasses

28 / 29-> 50-> 55-> 56

CIPO search

search just 28/56

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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