US PATENT SUBCLASS 165 / DIG 388
.~.~.~ Including spacer bar transverse to plate stack


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

DIG 355  DD  HAVING SEPARATE FLOW PASSAGE FOR TWO DISTINCT FLUIDS {7}
DIG 356  DD  .~ Plural plates forming a stack providing flow passages therein {11}
DIG 387  DD  .~.~ Including side-edge seal or edge spacer bar {5}
DIG 388.~.~.~ Including spacer bar transverse to plate stack