(under subclass 434) Subject matter including means for cooling (a) the charge-forming device or a part thereof, (b)
for cooling the combustible mixture formed by the charge-forming means, or (c) those elements (e.g., fuel, air, etc.) as they are fed to the charge former to form the charge.
(1) Note. Any cooling combined with supercharging should be classified in subclass 563 below.
(2) Note. If the cooling is done to the exhaust gas to be recycled to the engine, classification should be in subclass 570 below.
