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2163073
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Patent Grant
2163073
References
Source
Patent Number
2,163,073
Date Filed
Not available
Date Issued
Tuesday, June 20, 1939
85 years ago
CPC
C09B31/02 - Disazo dyes
C09B31/075 - ortho-Hydroxy carboxylic acid amides
US Classifications
534 - Organic compounds
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