US PATENT SUBCLASS 110 / 180
.~ Cooling
Current as of: June, 1999
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DEFINITION
Classification: 110/180
(under the class definition) Subject matter relating to doors and casings that are kept cool by the circulation of steam or air through them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
182, for doors and casings where the fluid after passing through them is fed to the fire.
SEE OR SEARCH CLASS
122, Liquid Heaters and Vaporizers,
497+, for boiler fronts.
202, Distillation: Apparatus, 243+, for fluid cooled still closures.
432, Heating,
237, for the subcombination of a material heating chamber comprising a door, door frame or chamber cover having protective cooling structure.
