Description: 84 / (2) String Instruments (3) Struck (Pianos, Dulcimers and Clavichord) (21) Pedals
Hierarchy/Derived subclasses
CIPO search
search just 84/21This 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.