USPC Class Details

Description: 137 fluid handling / 137 fluid handling/(803) flow affected by fluid contact, energy field or coanda effect (e.g., pure fluid device or system) (825) means to regulate or vary operation of device (827) by non-fluid energy field affecting input (e.g., transducer) (828) acoustical or thermal energy

Hierarchy/Derived subclasses

137 / 803

-> 825

-> 827

-> 828

uspto searches

Patent Apps in 137/828

Granted Patents in 137/828

Use the links above or do an advanced search in ppubs for:
(137/828.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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