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1850511
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Information
Patent Grant
1850511
References
Source
Patent Number
1,850,511
Date Filed
Not available
Date Issued
Tuesday, March 22, 1932
92 years ago
CPC
C09B1/20 - Preparation from starting materials already containing the anthracene nucleus
C09B1/201 - Dyes with no other substituents than the amino groups
US Classifications
552 - Organic compounds
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