USPC Class Details

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 (888) refrigeration: (class 62) (894) cyclic cryogenic system (e.g., sterling, gifford-mcmahon, etc.) (895) with regenerative heat exchanger

Hierarchy/Derived subclasses

505 / 825

-> 888

-> 894

-> 895

uspto searches

Patent Apps in 505/895

Granted Patents in 505/895

Use the links above or do an advanced search in ppubs for:
(505/895.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.

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