United States Patent: 2454541 ( 1
Issue Date: N
Patent Grant 2454541
U.S. patent number [Application Number ] was granted by the patent office on 1948-11-23 for united states patent: 2454541 ( 1.
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| United States Patent | 2,454,541 |
| Issue Date: | November 23, 1948 |
| Current U.S. Class: | 525/507; 510/506; 568/609; 516/193; 516/DIG.1 |
| Current CPC Class: | C11D 1/008 (20130101); C09B 67/0086 (20130101); C07C 309/00 (20130101); Y10S 516/01 (20130101) |
| Current International Class: | C09B 67/00 (20060101); C09B 67/46 (20060101); C11D 1/00 (20060101) |
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