Canadian Subclass Details

Description: 313 / (35) Cathode Ray Tube (35.2) Camera Tube (35.22) With Particular Target Features (35.221) P-N Junction, Diode or Rectifier (35.2211) Particular Material

Hierarchy/Derived subclasses

313 / 35

-> 35.2

-> 35.22

-> 35.221

-> 35.2211

CIPO search

search just 313/35.2211

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.