US PATENT SUBCLASS 60 / 273
.~ Methods

Current as of: June, 1999
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60 /   HD   POWER PLANTS

272  DF  INTERNAL COMBUSTION ENGINE WITH TREATMENT OR HANDLING OF EXHAUST GAS {18}
273.~ Methods {1}
274  DF  .~.~> Anti-pollution

DEFINITION

Classification: 60/273

(under subclass 272) Processes of treating or handling the materials discharging to atmosphere or to an external device from the combustion chamber of an internal combustion engine.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds,

212+, for a process of purifying a gas that is nominally the exhaust from an internal combustion engine.