US PATENT SUBCLASS 122 / 31.2
.~ Submerged flame

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

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

DEFINITION

Classification: 122/31.2

Submerged flame:

(under subclass 31.1) Devices wherein the hot fluid is produced by an underwater combustion.