US PATENT SUBCLASS 62 / 913
.~ Liquified gas

Current as of: June, 1999
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62 /   HD   REFRIGERATION

912  DF  External refrigeration system {1}
913.~ Liquified gas

DEFINITION

Classification: 62/913

Liquified gas:

Subject matter under 912 wherein the external refrigeration system is a tank of liquified gas (e.g. liquified nitrogen, oxygen, argon, etc.).