US PATENT SUBCLASS 62 / 172
.~ Air compessor, cooler and expander

Current as of: June, 1999
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62 /   HD   REFRIGERATION

132  DF  AUTOMATIC CONTROL {19}
172.~ Air compessor, cooler and expander

DEFINITION

Classification: 62/172

(under subclass 132) Apparatus controlling or responding to the operation of an air compressor-cooler-expander type refrigerant producer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

401+, for an air-compressor-cooler expander machine.