USPC Class Details

Description: 266 metallurgical apparatus / 266 metallurgical apparatus/(249) means treating solid metal (251) by contact with gas (252) with heating means (255) having work contained in separate, noncommunicating chamber, e.g., muffle (256) bell furnace

Hierarchy/Derived subclasses

266 / 249

-> 251

-> 252

-> 255

-> 256

uspto searches

Patent Apps in 266/256

Granted Patents in 266/256

Use the links above or do an advanced search in ppubs for:
(266/256.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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