Description: 355 / (27) Discharge Device Control Or Supply (41) Thermionic Conversion (42) Gas or Vapor

Hierarchy/Derived subclasses

355 / 27

-> 41

-> 42

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search just 355/42

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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