.~ Controlling flame position or work atmosphere {7}
23
.~.~ Establishing or maintaining composition of atmosphere bathing work
DEFINITION
Classification: 432/23
(under subclass 19) Process including a procedure by which a desired chemical makeup of the gaseous material surrounding the work is adjusted or established.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37, for apparatus under the class definition comprising automatic control means including an analyzer or composition sensor of work, work atmosphere or exhaust gas.