US PATENT SUBCLASS 34 / 168
.~.~ With gas or vapor flow for contact with treated material

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
165  DF  .~ Gravity flow type {7}
168.~.~ With gas or vapor flow for contact with treated material {4}
169  DF  .~.~.~> Recirculation of treating gas or vapor
170  DF  .~.~.~> Inverted imperforate ducts
171  DF  .~.~.~> Shelf-to-shelf or zigzag treated material flow {2}
174  DF  .~.~.~> Foraminous distributors or walls

DEFINITION

Classification: 34/168

(under subclass 165) Apparatus including means to contact the material treated with a treating gas or vapor.