US PATENT SUBCLASS 514 / 656
.~.~.~ Polycyclo ring system


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}
579  DF  .~ Nitrogen containing other than solely as a nitrogen in an inorganic ion of an addition salt, a nitro or a nitroso DOAI {22}
646  DF  .~.~ Benzene ring containing {5}
656.~.~.~ Polycyclo ring system {1}
657  DF  .~.~.~.~> Bicyclo ring system


DEFINITION

Classification: 514/656

Polycyclo ring system:

(under subclass 646) Subject matter which contains a polycyclo ring system.