US PATENT SUBCLASS 62 / 540
.~.~ With measured parameter responsive control

Current as of: June, 1999
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62 /   HD   REFRIGERATION

56  DF  PROCESSES {28}
532  DF  .~ Fractionally solidifying a constituent and separating the same {8}
540.~.~ With measured parameter responsive control

DEFINITION

Classification: 62/540

(under subclass 532) Processes wherein control of some processes variable is effected responsive to measurement of the same or another variable.

(1) Note. Mere liquid level control is excluded from this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

539, for a process in which the parameters of a pulsed column are controlled.