USPC Class Details

Description: 429 chemistry: electrical current producing apparatus, product, and process / 429 chemistry: electrical current producing apparatus, product, and process/(400) fuel cell, subcombination thereof, or method of making or operating (517) electrical current collector (519) specified collector material (521) carbon-based material

Hierarchy/Derived subclasses

429 / 400

-> 517

-> 519

-> 521

uspto searches

Patent Apps in 429/521

Granted Patents in 429/521

Use the links above or do an advanced search in ppubs for:
(429/521.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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