US PATENT SUBCLASS 534 / DIG 6
AZO COMPOUNDS CONTAINING -N(O)-N=, -N=S, OR -SO2N3 GROUPS


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534 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

DIG 6AZO COMPOUNDS CONTAINING -N(O)-N=, -N=S, OR -SO2N3 GROUPS