US PATENT SUBCLASS 34 / 84
.~.~.~ Gas or vapor circulators or flow promotors

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
72  DF  .~ With means to treat gas or vapor {3}
83  DF  .~.~ Jet devices {1}
84.~.~.~ Gas or vapor circulators or flow promotors

DEFINITION

Classification: 34/84

(under subclass 83) Apparatus in which the injecting devices act to circulate or promote flow of the treating gas or

vapor.

(1) Note. Many of these devices cause gas or vapor recirculation. For other subclasses involving gas or vapor recirculation, see (1) Note to subclass 219 of this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

221, in which a fluid similar in kind to the treating fluid is injected.