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| Patents Granted on 1823-02-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,656X | Feb. 12, 1823 | J. Carll | Thrashing grain and cleaning flax | flax and hemp machines | |
| 3,657X | Feb. 12, 1823 | W.A. Prince | Making carpeting, ingrain | ||