US PATENT SUBCLASS 165 / 141
.~ Concentric flow chambers

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

140  DF  THREE NON-COMMUNICATING FLUIDS {1}
141.~ Concentric flow chambers

DEFINITION

Classification: 165/141

(under subclass 140) Apparatus in which at least two of the fluid holders are concentric.