US PATENT SUBCLASS 165 / DIG 460
.~.~ With spacers interposed between adjacent passages


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

DIG 454  DD  HAVING SIDE-BY-SIDE CONDUITS STRUCTURE OR CONDUIT SECTION {16}
DIG 459  DD  .~ Strips with shaped, interfitted edges form heat exchanger core with plural passages {1}
DIG 460.~.~ With spacers interposed between adjacent passages