Description: 122 / (36) Boilers And Water Heaters (67) Fire Tube Boilers (68) Horizontal Tubes (71) Subjacent-Furnace (72) Settings-Per Se

Hierarchy/Derived subclasses

122 / 36

-> 67

-> 68

-> 71

-> 72

CIPO search

search just 122/72

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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