US PATENT SUBCLASS 432 / 20
.~.~ Providing flame or high luminosity

Current as of: June, 1999
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432 /   HD   HEATING

1  DF  PROCESSES OF HEATING OR HEATER OPERATION {14}
19  DF  .~ Controlling flame position or work atmosphere {7}
20.~.~ Providing flame or high luminosity

DEFINITION

Classification: 432/20

(under subclass 19) Process in which the heat radiation characteristics of the work atmosphere are controlled by providing an additive or adjusting combustion to produce a flame of high luminosity.

SEE OR SEARCH CLASS

431, Combustion, for a combustion process including the feeding of a flame modifying additive.