.~ Withdrawing or adding refrigerant from or to normally closed system
DEFINITION
Classification: 62/149
(under subclass 132) Apparatus which controls or responds to means adding or withdrawing refrigerant to or from a closed circuit type refrigeration system, relative to a source external of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
174, for means collecting and discharging refrigerant batches within the system.
