US PATENT SUBCLASS 568 / 374
.~.~.~.~.~ Bicyclo ring system


Current as of: June, 1999
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568 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
303  DF  .~.~ Ketones {10}
367  DF  .~.~.~ Plural alicyclic rings containing {1}
368  DF  .~.~.~.~ Polycyclo ring system {3}
374.~.~.~.~.~ Bicyclo ring system


DEFINITION

Classification: 568/374

(under subclass 368) Compounds wherein the polycyclo ring system consists of two rings.