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| Patents Granted on 1840-10-08 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,809 | Oct. 08, 1840 | R. Daniels | Manufacture of cloth of various kinds by the employment of wool and silk obtained by reducing worn-out woolen and silk goods into the fibrous state | ||
| 1,811 | Oct. 08, 1840 | J.S. Ives | Machine for cutting the teeth of combs | comb making machines | |