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2772140
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Information
Patent Grant
2772140
References
Source
Patent Number
2,772,140
Date Filed
Not available
Date Issued
Tuesday, November 27, 1956
68 years ago
CPC
C14C3/24 - using lignin derivatives
D21C11/0007 - Recovery of by-products
US Classifications
008 - Bleaching and dyeing
530 - Chemistry: natural resins or derivatives
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