Description: 362 / (1) Microbiological Or Aeration (9) Aerobic (12) With Chemical Treatment

Hierarchy/Derived subclasses

362 / 1-> 9-> 12

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search just 362/12

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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