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3661500
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Information
Patent Grant
3661500
References
Source
Patent Number
3,661,500
Date Filed
Not available
Date Issued
Tuesday, May 9, 1972
52 years ago
CPC
A61Q5/065 - Preparations for temporary colouring the hair
A61K8/494 - with more than one nitrogen as the only hetero atom
C09B5/46 - Para-diazines
Y10S8/917 - Wool or silk
US Classifications
008 - Bleaching and dyeing
544 - Organic compounds
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