USPC Class Details

Description: 338 electrical resistors / 338 electrical resistors/(13) resistance value responsive to a condition (20) current and/or voltage (e.g., ballast resistor) (22r) thermistor type (23) indirectly heated

Hierarchy/Derived subclasses

338 / 13-> 20-> 22r-> 23

uspto searches

Patent Apps in 338/23

Granted Patents in 338/23

Use the links above or do an advanced search in ppubs for:
(338/23.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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