US PATENT SUBCLASS 165 / 167
.~.~.~ With plate traversing passages interconnecting alternate spaces

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

164  DF  FLOW PASSAGES FOR TWO CONFINED FLUIDS {1}
165  DF  .~ Interdigitated plural first and plural second fluid passages {1}
166  DF  .~.~ Stacked plates or shells form interplate passages {1}
167.~.~.~ With plate traversing passages interconnecting alternate spaces

DEFINITION

Classification: 165/167

(under subclass 166) Apparatus in which alternate interface passages of the stack are connected by passage means penetrating or extending through plates of the stack.