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 (428) process or means for control of operation (433) arrangement or process including thermal control (434) including heat exchange means (441) heating by combustion

Hierarchy/Derived subclasses

429 / 400

-> 428

-> 433

-> 434

-> 441

uspto searches

Patent Apps in 429/441

Granted Patents in 429/441

Use the links above or do an advanced search in ppubs for:
(429/441.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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