US PATENT SUBCLASS 422 / 284
.~.~.~ Internal heater; e.g., steam coil, etc.

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

243  DF  PHYSICAL TYPE APPARATUS {8}
255  DF  .~ Means separating or dissolving a material constituent {3}
261  DF  .~.~ Liquid-solid contact means {17}
284.~.~.~ Internal heater; e.g., steam coil, etc.

DEFINITION

Classification: 422/284

Internal heater; e.g., steam coil, etc.:

(under subclass 261) Apparatus having heating means located within the same.