US PATENT SUBCLASS 126 / 378
.~.~.~.~ Closed chamber or coil

Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

344  DF  WATER HEATERS {7}
373  DF  .~ Vessels {10}
376  DF  .~.~ Fluid-heated {1}
377  DF  .~.~.~ Steam- or water-heated {2}
378.~.~.~.~ Closed chamber or coil

DEFINITION

Classification: 126/378

(under subclass 377) Devices in which the steam or heated liquid is in, or passes through, a chamber or coil which is in heat exchange relationship with the contents of the vessel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

366, for steam or hot water pipes submerged in a closed liquid heating system.

SEE OR SEARCH CLASS

219, Electric Heating,

325, 326 and 381 for electric heaters immersed in liquid to be heated.