US PATENT SUBCLASS 432 / 82
.~ Entering and leaving work exchange heat
Current as of:
June, 1999
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432 /
HD
HEATING
77
DF
WITH WORK COOLING STRUCTURE
{5}
82
.~ Entering and leaving work exchange heat
DEFINITION
Classification: 432/82
(under subclass 77) Apparatus including means by which heat removed from the work during cool-down is transferred to work being supplied.