Description: 321 / (12) Current Conversion (E.G. Rectification, Derectification) (65) A.C. to D.C. Conversion (e.g., Rectification, Converter) (75) Diode type Converter (76) With Converter Protective Means, Malfunction or Failure Detecting Means (77) Fusible or Air Gap Type Protective Device
Hierarchy/Derived subclasses
CIPO search
search just 321/77This 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.