US PATENT SUBCLASS 514 / 721
.~.~.~.~ Plural benzene rings


Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
715  DF  .~ Ether DOAI {3}
717  DF  .~.~ Benzene ring containing {1}
718  DF  .~.~.~ Plural oxygens {3}
721.~.~.~.~ Plural benzene rings


DEFINITION

Classification: 514/721

Plural benzene rings:

(under subclass 718) Subject matter wherein the compound contains two or more benzene rings.