US PATENT SUBCLASS 110 / 210
.~ Afterburning means

Current as of: June, 1999
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110 /   HD   FURNACES

203  DF  WITH EXHAUST GAS TREATMENT MEANS {5}
210.~ Afterburning means {3}
211  DF  .~.~> Means directing main flame or combustion products for afterburning
212  DF  .~.~> Liquid or gaseous fueled {1}
214  DF  .~.~> Including means to add air

DEFINITION

Classification: 110/210

Afterburning means:

(under subclass 203) Apparatus wherein the treating means includes means to effect combustion of unburned components in the gaseous products of combustion.

SEE OR SEARCH CLASS

431, Combustion, appropriate subclass for fluid fueled burners.