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 (479) externally heated line connected section

Hierarchy/Derived subclasses

392 / 465-> 479-> 480-> 481
  -> 482
  -> 483
  -> 484

uspto searches

Patent Apps in 392/479

Granted Patents in 392/479

Use the links above or do an advanced search in ppubs for:
(392/479.ccls. or 392/480.ccls. or 392/481.ccls. or 392/482.ccls. or 392/483.ccls. or 392/484.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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