Description: 164 / (18) Cutting Methods (27) Punch and Die Cutting
Hierarchy/Derived subclasses
CIPO searches
search just 164/27- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((164/27 <IN> CPC) <OR> (164/28 <IN> CPC) <OR> (164/29 <IN> CPC) <OR> (164/30 <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.