US PATENT SUBCLASS 62 / 919
Isotope

Current as of: June, 1999
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62 /   HD   REFRIGERATION

919Isotope

DEFINITION

Classification: 62/919

Isotope:

Subject matter specific to the separation of one isotope from another (e.g. hydrogen from deuterium).

(1) Note. Documents concerned with He3[end subscrpt]/He4 dilution refrigerators should not be crossed here but crossed into this class, subclass 610.