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1. (WO1991008265) AZO COMPOUNDS AND THEIR USE AS DYES, 1-SULPHO-6-CARBOXYL-AMINO NAPHTHALINE, ITS USE AS A DIAZO COMPONENT AND PROCESS FOR THE PRODUCTION OF THESE COMPOUNDS
Available information on National Phase entries(more information)
OfficeEntry DateNational NumberNational Status
European Patent Office 16.05.19921990917303Published: 16.09.1992
Withdrawn: 12.05.1993