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2183754
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Information
Patent Grant
2183754
References
Source
Patent Number
2,183,754
Date Filed
Not available
Date Issued
Tuesday, December 19, 1939
85 years ago
CPC
D06P5/22 - Effecting variation of dye affinity on textile material by chemical means that react with the fibre
D06P1/6426 - Heterocyclic compounds
D06P1/6491 - (Thio)urea or (cyclic) derivatives
D06P1/66 - containing quaternary ammonium groups
D06P3/14 - wool
D06P3/401 - using acid dyes
D06P3/58 - material containing hydroxyl groups
US Classifications
008 - Bleaching and dyeing
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