Description: 270 / (53) To A Stack (66) With Stack Removal (67) Alternate Stacks

Hierarchy/Derived subclasses

270 / 53

-> 66

-> 67

CIPO search

search just 270/67

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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