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| Patents for J. W. Hamilton | |||||
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| Number | Date | Patentee | Title | Type | |
| 11,107 | Jun. 20, 1854 | E. Allen | Improved veneer-polisher | belt sanders | |
| 11,492 | Aug. 08, 1854 | C.T. Porter | Stone-dressing machine | stone dressing machines | |
| 11,777 | Oct. 10, 1854 | S. Carpenter | Machine for turning hubs, tool-handles, &c. | wood lathes | |
| 11,907 | Nov. 07, 1854 | E.W. Roff | Machine for cutting tenons on blind-slats | windowblind machines | |
| 13,256 | Jul. 17, 1855 | J. Fraser | Adjustable Vise | ||