.~.~.~ With pressure generating or maintaining means
DEFINITION
Classification: 219/431
(under subclass 429) Subject matter including means whereby a pressure; greater than normal atmospheric pressure, is generated or maintained within a vessel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
280, for fluids heaters in general.
401, for ovens having steam generating means.
440, for electrically heated vessels, per se, of the pressure maintaining type.
SEE OR SEARCH CLASS
99, Foods and Beverages: Apparatus, 323.4+, for cereal puffing apparatus utilizing means for producing sudden changes in pressure, subclasses 324+ for pressure cooking apparatus, and subclasses 467+ for apparatus subjecting food to an electric field or current discharge.
122, Liquid Heaters and Vaporizers, appropriate subclasses for high pressure steam generators.
126, Stoves and Furnaces,
20, for steam or hot water heated ovens.
220, Receptacles, appropriate subclass for metallic receptacles to be used as pressure cookers.
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,
292+, for sterilizing devices similar in structure to Class 219 deep well devices and sterilizing apparatus using steam.
