US PATENT SUBCLASS 165 / 145
.~ In common casing

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

144  DF  LINE CONNECTED CONDUIT ASSEMBLIES {1}
145.~ In common casing

DEFINITION

Classification: 165/145

(under subclass 144) Apparatus in which the connected units are within the same enclosing structure.