Description: 321 / (12) Current Conversion (E.G. Rectification, Derectification) (22) A.C. to A.C. Conversion (25) With Discharge Type Converter
Hierarchy/Derived subclasses
CIPO search
search just 321/25This 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.