| All Patents in class 72/436 |
Patents 1 -
15
of 55
      |
| Number | Date | Patentee | Title | Type |
| 8,115 | May 27, 1851 | H. Waterman | Machinery for hardening and straightening saws, &c. | making sawblades |
| 8,548 | Nov. 25, 1851 | M. Peck | Drop Hammer | drop hammers |
| 37,445 | Jan. 20, 1863 | W.C. Hicks | Improvement in drop-presses | stamping presses |
| 41,775 | Mar. 01, 1864 | B. Hotchkiss | Drop Hammer | drop hammers |
| 42,581 | May 03, 1864 | B. Hotchkiss | Power Hammer | trip and helve hammers |
| 58,880 | Oct. 16, 1866 | J.P. Noyes | Drop Hammer | drop hammers |
| 130,183 | Aug. 06, 1872 | J. Blackadder | Improvement in Drop-Hammers | drop hammers |
| 132,173 | Oct. 15, 1872 | J. Neuberger | Improvements in Trip-Hammers | trip and helve hammers |
| 142,723 | Sep. 09, 1873 | C. Peck | Drop Hammer Lifters | drop hammers |
| 161,954 | Apr. 13, 1875 | H. Hammond | Drop Hammer | drop hammers |
| 164,392 | Jun. 15, 1875 | F.A. Pratt | Improvement in drop-hammers | |
| 166,371 | Aug. 03, 1875 | B. Hershey | Machine for Welding Chain Links | chain making machines |
| 177,135 | May 09, 1876 | R.F. Livermore | Portable Spring-Power Hammer | foot operated hammers |
| RE7,788 | Jul. 10, 1877 | W.C. Hicks | Improvement in drop-presses | stamping presses |
| 194,593 | Aug. 28, 1877 | J. French | Machines for Welding Tubes | welding machines |
