US PATENT SUBCLASS 568 / 661
.~.~.~.~.~ Halogen containing

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}
579  DF  .~.~ Ethers {11}
626  DF  .~.~.~ Benzene ring containing {7}
659  DF  .~.~.~.~ Plural rings containing {2}
661.~.~.~.~.~ Halogen containing

DEFINITION

Classification: 568/661

Halogen containing:

(under subclass 659) Compounds which contain halogen.