US PATENT SUBCLASS 122 / 31.1
INDIRECTLY HEATED SEPARATE INJECTED FLUID

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

31.1INDIRECTLY HEATED SEPARATE INJECTED FLUID {1}
31.2  DF  .~> Submerged flame

DEFINITION

Classification: 122/31.1

INDIRECTLY HEATED SEPARATE INJECTED FLUID:

(under the class definition) Devices in which heating of a fluid is by the injection of a hot fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

28, for analogous devices used for noncombustible hot material.