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| Patents Granted on 1823-10-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,767X | Oct. 15, 1823 | P.C. Curtis | Carding and spinning wool | cloth carding machines | |
| 3,768X | Oct. 15, 1823 | J. Galbraith | Tanning | ||