US PATENT SUBCLASS 62 / 234
.~ Defrosting

Current as of: June, 1999
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62 /   HD   REFRIGERATION

231  DF  TIME OR PROGRAM ACTUATOR {3}
234.~ Defrosting

DEFINITION

Classification: 62/234

(under subclass 231) Apparatus relating to a defrosting operation of a refrigeration producer.

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140, and 151, for automatic control of defrosting.