USPC Class Details

Description: 122 liquid heaters and vaporizers / 122 liquid heaters and vaporizers/(44.1) fire tube (51) horizontal (75) return fire tube (76) drop water firebox

Hierarchy/Derived subclasses

122 / 44.1-> 51-> 75-> 76-> 77

uspto searches

Patent Apps in 122/76

Granted Patents in 122/76

Use the links above or do an advanced search in ppubs for:
(122/76.ccls. or 122/77.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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