Description: 325 / (71) Receivers (110) With Frequency Modifying or Conversion Means (113) With Particular Conversion Means (e.g., Homodyne)
Hierarchy/Derived subclasses
CIPO searches
search just 325/113- or -
search hierarchy!
The "search hierarchy!" link will execute this search:
((325/113 <IN> CPC) <OR> (325/114 <IN> CPC))
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.