US PATENT SUBCLASS 564 / *
ORGANIC COMPOUNDS (Class 532, Subclass 1)
Current as of:
June, 1999
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ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES
*
ORGANIC COMPOUNDS (Class 532, Subclass 1)
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> AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}