US PATENT SUBCLASS 62 / 129
.~ Condition sensing

Current as of: June, 1999
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62 /   HD   REFRIGERATION

125  DF  WITH INDICATOR OR TESTER {5}
129.~ Condition sensing {1}
130  DF  .~.~> External cooled material

DEFINITION

Classification: 62/129

(under subclass 125) Apparatus which automatically responds to a variable condition.

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125, for a gauge glass which enables movement of a refrigerant to be observed.

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340, Communications: Electrical,

500+, for electrical automatic condition responsive indicating systems.