USPC Class Details

Description: 392 electric resistance heating devices / 392 electric resistance heating devices/() heating devices (class 219 subclass 200) (465) continuous flow type fluid heater (485) heated line section with heating element internal of flow path (494) block forms flow path

Hierarchy/Derived subclasses

392 / 465

-> 485

-> 494

uspto searches

Patent Apps in 392/494

Granted Patents in 392/494

Use the links above or do an advanced search in ppubs for:
(392/494.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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