USPC Class Details – HistoricIP

Description: 505 superconductor technology: apparatus, material, process / 505 superconductor technology: apparatus, material, process/(825) apparatus, per se, device, per se, or process of making or operating same (853) oscillator: (class 331)

Hierarchy/Derived subclasses

505 / 825

-> 853

-> 854

uspto searches

Patent Apps in 505/853

Granted Patents in 505/853

Use the links above or do an advanced search in ppubs for:
(505/853.ccls. or 505/854.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.