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 (452) grouping of fuel cells into stack or module

Hierarchy/Derived subclasses

429 / 400	-> 452	-> 453
		-> 454	-> 455
			-> 456	-> 457
				-> 458	-> 459
					-> 460
					-> 461
				-> 462
		-> 463
		-> 464
		-> 465	-> 466
		-> 467	-> 468
			-> 469
			-> 470
		-> 471

uspto searches

Patent Apps in 429/452

Granted Patents in 429/452

Use the links above or do an advanced search in ppubs for:
(429/452.ccls. or 429/453.ccls. or 429/454.ccls. or 429/455.ccls. or 429/456.ccls. or 429/457.ccls. or 429/458.ccls. or 429/459.ccls. or 429/460.ccls. or 429/461.ccls. or 429/462.ccls. or 429/463.ccls. or 429/464.ccls. or 429/465.ccls. or 429/466.ccls. or 429/467.ccls. or 429/468.ccls. or 429/469.ccls. or 429/470.ccls. or 429/471.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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