Hierarchy/Derived subclasses
311 / 1 | -> 13 | -> 16 | -> 17 | ||
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CIPO searches
search just 311/16- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((311/16 <IN> CPC) <OR> (311/17 <IN> CPC) <OR> (311/18 <IN> CPC) <OR> (311/19 <IN> CPC) <OR> (311/20 <IN> CPC) <OR> (311/21 <IN> CPC) <OR> (311/22 <IN> CPC) <OR> (311/23 <IN> CPC) <OR> (311/24 <IN> CPC) <OR> (311/25 <IN> CPC) <OR> (311/26 <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.