.~ Means supplying a protective or treating agent other than or additional to air
DEFINITION
Classification: 432/198
(under subclass 120) Apparatus including structure by which a material of a different composition than atmospheric air is admitted to the work chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23, for a process of establishing or maintaining the composition of the atmosphere bathing work being heated.
37, for an automatic control responsive to a sensor of the composition of the work or work atmosphere; and 159+, for a work chamber in which the work is heated by contact with combustion products.
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids,
516+, for a residual gas or vapor and solid contact process utilizing a special gas or vapor contact with a solid apparatus with means to treat the gas or vapor.
312, Supports: Cabinet Structure,
31+, for a residual cabinet having means to treat material with gas or vapor.
