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| Patents for William Greenough | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,211 | Mar. 20, 1849 | J.P. Woodbury | Planing-machine | wood planers | |
| 7,004 | Jan. 08, 1850 | L.W. Miller | Hub-boring machine | wheelwright | |
| 12,162 | Jan. 02, 1855 | M.G. Hubbard | Mode of hanging the knife in planing-machines | wood planers | |