US PATENT SUBCLASS 62 / 909
.~ Regeneration

Current as of: June, 1999
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62 /   HD   REFRIGERATION

902  DF  Apparatus {6}
909.~ Regeneration

DEFINITION

Classification: 62/909

Regeneration:

Subject matter under 902 with specific details to valve configuration or material used in the reversing heat exchangers as found in this class, subclasses 638 and 641.