US PATENT SUBCLASS 165 / 155
.~ With communicating coaxial enclosure

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

154  DF  NON-COMMUNICATING COAXIAL ENCLOSURES {2}
155.~ With communicating coaxial enclosure

DEFINITION

Classification: 165/155

(under subclass 154) Apparatus with means forming a third coaxial chamber communicating with one only of the two chambers that do not unite.