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| Patents Granted on 1851-09-02 | |||||
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| Number | Date | Patentee | Title | Type | |
| AI98 | Sep. 02, 1851 | F. Pfanner | Dyestuffs from spent madder | ||
| 8,330 | Sep. 02, 1851 | T.M. Chapman | Saw-filing machine | saw sharpening machines | |