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| Patents for Phineas Pratt | |||||
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| Number | Date | Patentee | Title | Type | |
| 245X | Apr. 12, 1799 | P. Pratt | Machine for making ivory combs | comb making machines | |
| 826X | Mar. 05, 1808 | P. Pratt | Machine for making combs | comb making machines | |