US PATENT SUBCLASS 60 / 39.5
.~ With exhaust treatment

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

39.01  DF  COMBUSTION PRODUCTS USED AS MOTIVE FLUID {31}
39.5.~ With exhaust treatment {2}
39.511  DF  .~.~> Regenerator {1}
39.52  DF  .~.~> Exhaust gas recycling