Canadian Subclass Details

Description: 182 / (19) Filters (65) Cylindrical With Radial Flow (e.g., Cartridges) (78) With Flow-or-Pressure-Responsive Valve

Hierarchy/Derived subclasses

182 / 19-> 65-> 78-> 79
   -> 80
   -> 81

CIPO searches

search just 182/78

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((182/78 <IN> CPC) <OR> (182/79 <IN> CPC) <OR> (182/80 <IN> CPC) <OR> (182/81 <IN> CPC))

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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