US PATENT SUBCLASS 122 / 6.5
.~ Port

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

6 R  DF  INDUSTRIAL {7}
6.5.~ Port

DEFINITION

Classification: 122/6.5

(under subclass 6) Subject matter comprising water circulation devices applied to the gas or air ports of a furnace.

SEE OR SEARCH CLASS

431, Combustion,

160, for a fuel disperser installed in a combustion chamber cooled by a gas additional to the combustion materials.

432, Heating,

173, for a specific furnace having a protective cooling means for combustion material feed structure.