Description: 126 / (15) Enclosed Combustion Chamber (87) Flue Pipes (88) Ventilating

Hierarchy/Derived subclasses

126 / 15

-> 87

-> 88

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search just 126/88

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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