Description: 342 / (20) With Signal Or Energy Processing (23) For Motive Power (24) For Fluid Drive (25) Running Length

Hierarchy/Derived subclasses

342 / 20-> 23-> 24-> 25

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This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find patents in those subclasses.
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