Description: 321 / (1) Frequency Conversion (F1 To F2) (7) Semiconductor Type Converter (8) With S.C.R. Device

Hierarchy/Derived subclasses

321 / 1

-> 7

-> 8

CIPO search

search just 321/8

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.

Display:

Back