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| Patents for David Baldwin | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,098X | Oct. 01, 1830 | D. Baldwin | Friction rollers | ||
| 612 | Feb. 21, 1838 | S. Shepherd, D. Baldwin | Matcher | wood planers | |
| 12,118 | Jan. 02, 1855 | D. Baldwin | Feeding paper to printing presses and ruling machine | printer | |