USPC Class Details

Description: 203 distillation: processes, separatory / 203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (27) utilizing recovered heat in subsequent step in process

Hierarchy/Derived subclasses

203 / 21

-> 27

uspto searches

Patent Apps in 203/27

Granted Patents in 203/27

Use the links above or do an advanced search in ppubs for:
(203/27.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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