US PATENT SUBCLASS 165 / 147
.~ Tapered conduit means

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

Internet Version by PATENTEC © 1999      Terms of Use


165 /   HD   HEAT EXCHANGE

146  DF  GRADATED HEAT TRANSFER STRUCTURE {1}
147.~ Tapered conduit means

DEFINITION

Classification: 165/147

(under subclass 146) Apparatus in which heat transfer takes place through the wall of a passage increasing progressively in cross-sectional area.