US PATENT SUBCLASS 34 / 68
.~.~ Diverse heater types and/or gas or vapor contact types only

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

523  DF  APPARATUS {40}
60  DF  .~ For diverse operations on treated material {4}
68.~.~ Diverse heater types and/or gas or vapor contact types only

DEFINITION

Classification: 34/68

(under subclass 60) Apparatus in which the only means for treatment is by (1) diverse heating type apparatus, (2) diverse apparatus that treats by gas or vapor contact, or (3) combinations of heat type with gas or vapor type.

(1) Note. There must be at least two diverse types of apparatus. A single type of apparatus having both heating means and gas or vapor contact is placed with the type of apparatus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

62, and indented subclasses, for similar drier and cooler combinations.

418+,