US PATENT SUBCLASS 436 / 140
.~ Aromatic

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

139  DF  HYDROCARBON {3}
140.~ Aromatic

DEFINITION

Classification: 436/140

Aromatic:

(under subclass 139) Subject matter in which the qualitative and quantitative chemical analysis is for a compound containing one or more aromatically unsaturated rings.