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 (498) fuel cell with liquid electrolyte

Hierarchy/Derived subclasses

429 / 400-> 498-> 499-> 500
   -> 501

uspto searches

Patent Apps in 429/498

Granted Patents in 429/498

Use the links above or do an advanced search in ppubs for:
(429/498.ccls. or 429/499.ccls. or 429/500.ccls. or 429/501.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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