US PATENT SUBCLASS 432 / 193
.~.~ Spaced exhaust ports from work chamber

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
159  DF  .~ Combustion products heat work by contact {19}
193.~.~ Spaced exhaust ports from work chamber

DEFINITION

Classification: 432/193

(under subclass 159) Apparatus in which work atmosphere is withdrawn from the work chamber through plural ports spaced from each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

192, for a work chamber fed by a distinct combustion chamber, the supply or exhaust from the work chamber being through a wall floor or roof having multiple perforations.