US PATENT SUBCLASS 237 / 38
.~.~.~.~ Injected

Current as of: June, 1999
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237 /   HD   HEATING SYSTEMS

28  DF  VEHICLE {7}
34  DF  .~ Water {2}
35  DF  .~.~ Car boiler {2}
37  DF  .~.~.~ Train steam {1}
38.~.~.~.~ Injected

DEFINITION

Classification: 237/38

(under subclass 37) Subject matter having means for injecting steam from the train pipe into the water circuit.