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| Patents Granted on 1827-01-31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,646X | Jan. 31, 1827 | R. Bacon | Machine for planking hats | trade specific | |
| 4,647X | Jan. 31, 1827 | E.B. Clark | Jointing and tongueing boards | jointers | |
| 4,648X | Jan. 31, 1827 | T.G. Fessenden | Lamp for boiling water | household tools | |
| 4,649X | Jan. 31, 1827 | J.J. Giraud | Machinery used in navigation | ||