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Charles R. Wetzel
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High Point, NC, US
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last 30 patents
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Patent Grant
Process for the preparation of concentrated 1:2 metal complex dye p...
Patent number
5,019,132
Issue date
May 28, 1991
Ciba-Geigy Corporation
Herb Davis
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...