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Azo dyes, their preparation and use
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Patent number 4,283,331
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Issue date Aug 11, 1981
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Ciba-Geigy Corporation
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Karl Seitz
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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6-Hydroxypyrid-2-one azo dyestuffs
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Patent number 3,957,747
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Issue date May 18, 1976
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Imperial Chemical Industries Limited
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Peter William Austin
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3926944
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Patent number 3,926,944
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Issue date Dec 16, 1975
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3905950
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Patent number 3,905,950
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Issue date Sep 16, 1975
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3869440
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Patent number 3,869,440
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Issue date Mar 4, 1975
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3847894
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Patent number 3,847,894
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Issue date Nov 12, 1974
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3776918
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Patent number 3,776,918
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Issue date Dec 4, 1973
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C07 - ORGANIC CHEMISTRY
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3729476
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Patent number 3,729,476
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Issue date Apr 24, 1973
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C07 - ORGANIC CHEMISTRY
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3725383
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Patent number 3,725,383
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Issue date Apr 3, 1973
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3668211
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Patent number 3,668,211
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Issue date Jun 6, 1972
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C07 - ORGANIC CHEMISTRY
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3598801
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Patent number 3,598,801
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Issue date Aug 10, 1971
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3471467
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Patent number 3,471,467
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Issue date Oct 7, 1969
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3320232
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Patent number 3,320,232
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Issue date May 16, 1967
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...