US PATENT SUBCLASS 237 / 71
.~ Water, steam


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

70  DF  HEAT RADIATORS {6}
71.~ Water, steam {1}
72  DF  .~.~> Injected


DEFINITION

Classification: 237/71

(under subclass 70) Radiators adapted to contain water heated by steam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

75, for steam heat accumulator.