Canadian Subclass Details

Description: 165 / (1) Gas/Liquid Contact (5) Tray-Type (6) Valve Cap Column

Hierarchy/Derived subclasses

165 / 1-> 5-> 6

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search just 165/6

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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