ClassID:

140880

F02M31/0825 - CPC Classification

Classification description:

Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases Particular constructional characteristics of the heat exchange surfaces, e.g. finned pipes, coiled pipes or the like

Recent Application in this class: