| Patents Granted on 1857-04-28 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| RE458 | Apr. 28, 1857 | P. Crosby | Improved saw-mill for resawing boards and other lumber | sawmills |
| XC-726 | Apr. 28, 1857 | H.L. Beverly | New and improved shingle cutting machine | |
| 17,141 | Apr. 28, 1857 | D.T. Drake | Machine for mortising the stiles of blind-slats | mortising machines |
| 17,146 | Apr. 28, 1857 | C.H. Field | Machine for engraving designs on watch and locket cases, &c. | metal engraving machines |
| 17,153 | Apr. 28, 1857 | O.B. Judd | Saw-gummer | saw gummers |
| 17,169 | Apr. 28, 1857 | W.L. Ormsby | Machine for splitting wood | wood splitting machines |
| 17,170 | Apr. 28, 1857 | I. Robbins | Method of setting head-blocks of sawmills | sawmill headblocks |
| 17,171 | Apr. 28, 1857 | T.S. Scoville | Machine for planing hoops | hoop making machines |
| 17,175 | Apr. 28, 1857 | L. Stevens | Machine for tenoning blind-slats | tenoning machines |
| 17,183 | Apr. 28, 1857 | M. Marshall | Method of reversing chisels of mortising-machines | mortising machines |
