US PATENT SUBCLASS 165 / DIG 340
.~.~ Including flow baffle in casing

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

DIG 327  DD  THERMOSYPHONIC HAVING VERTICAL AIR DRAFT PASSAGE {3}
DIG 337  DD  .~ Heating or cooling means entirely surrounded by air draft passage forming casing {3}
DIG 340.~.~ Including flow baffle in casing