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2683644
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Patent Grant
2683644
References
Source
Patent Number
2,683,644
Date Filed
Not available
Date Issued
Tuesday, July 13, 1954
69 years ago
CPC
D06P1/224 - using vat dyes in unreduced pigment state
Y10S8/927 - Polyacrylonitrile fiber
US Classifications
008 - Bleaching and dyeing
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