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 (401) biochemical fuel cell

Hierarchy/Derived subclasses

429 / 400

-> 401

uspto searches

Patent Apps in 429/401

Granted Patents in 429/401

Use the links above or do an advanced search in ppubs for:
(429/401.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.

Display:

Back