US PATENT SUBCLASS 237 / 72
.~.~ Injected

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

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

DEFINITION

Classification: 237/72

(under subclass 71) Radiators containing water heated by steam either injected into the water or heated by steam passing through conduits that heat the water, the steam finally coming into contact with the water in the radiator. These radiators may also be convertible as steam radiators or water radiators heated by steam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

74, for injecting means for steam circuits.