US PATENT SUBCLASS 62 / 137
.~.~ By accumulation of product

Current as of: June, 1999
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62 /   HD   REFRIGERATION

132  DF  AUTOMATIC CONTROL {19}
135  DF  .~ By congealed removable product condition {2}
137.~.~ By accumulation of product {1}
138  DF  .~.~.~> On heat absorber

DEFINITION

Classification: 62/137

(under subclass 135) Apparatus in which the sensing means responds to an accumulation of the congealed product.

SEE OR SEARCH THIS CLASS, SUBCLASS:

139+, for condition sensing control by other accumulation, e.g., frost on a freezing surface, i.e., apparatus not having mechanical means to remove the accumulation.