US PATENT SUBCLASS 110 / 212
.~.~ Liquid or gaseous fueled

Current as of: June, 1999
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110 /   HD   FURNACES

203  DF  WITH EXHAUST GAS TREATMENT MEANS {5}
210  DF  .~ Afterburning means {3}
212.~.~ Liquid or gaseous fueled {1}
213  DF  .~.~.~> Swirl inducing

DEFINITION

Classification: 110/212

Liquid or gaseous fueled:

(under subclass 210) Apparatus wherein an auxiliary fluid fueled burner is used to assist in effecting combustion of unburned components in the gaseous products of combustion.