US PATENT SUBCLASS 552 / 503
.~.~ With preservative or stabilizer

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

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {11}
502  DF  .~ Cyclopentanohydrophenanthrene ring system containing {21}
503.~.~ With preservative or stabilizer

DEFINITION

Classification: 552/503

(under subclass 502) Products which contain a compound having a cyclopenthanohydrophenanthrene ring system in admixture with a preserving or stabilizing agent whose sole function is to prevent physical or chemical change.