US PATENT SUBCLASS 62 / 657
.~ Automatic control

Current as of: June, 1999
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62 /   HD   REFRIGERATION

600  DF  CRYOGENIC TREATMENT OF GAS OR GAS MIXTURE {4}
657.~ Automatic control

DEFINITION

Classification: 62/657

Automatic control:

(under subclass 600) Subject matter wherein the operation is changed in response to a sensed condition without the intervention of an operator.

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