Description: 126 / (15) Enclosed Combustion Chamber (16) Jacketed (17) With Intermediate Heat Transfer Fluid (18) Distribution Type (e.g., Hot Air Furnace) (19) With Liquid Heating Means

Hierarchy/Derived subclasses

126 / 15

-> 16

-> 17

-> 18

-> 19

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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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