| Patents Granted on 1857-05-12 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| RE463 | May 12, 1857 | E. Bancroft | Improvement in hanging shafts in mills | industrial machine shaft hangers |
| XC-734 | May 12, 1857 | U. Haskins | New and improved rotary steam engine | rotary steam engines |
| 17,254 | May 12, 1857 | W. Bevard | Rotary shingle-cutter | shingle machines |
| 17,263 | May 12, 1857 | T. Cook | Machine for cutting match-splints | match making machines |
| 17,269 | May 12, 1857 | E.F. French | Corn Husker | corn huskers |
| 17,284 | May 12, 1857 | H. Kendall | Blacksmith's striker | trip and helve hammers |
| 17,286 | May 12, 1857 | B.I. Lane | Joiner's Plane | plane cutter adjustments |
| 17,292 | May 12, 1857 | C.T. Pearson | Joiner's bench-strip | workbenches |
| 17,300 | May 12, 1857 | E.Q. Smith | Machine for planing chair-seats | chair maker |
