| All Patents in class 72/439 |
Patents 1 -
15
of 80
      |
| Number | Date | Patentee | Title | Type |
| 3,882 | Jan. 10, 1845 | G.E. Sellers | Drop Hammer | trip and helve hammers |
| 36,459 | Sep. 16, 1862 | W.F. Goulding, F. Cheney | Improvement in Drop-Presses | drop hammers |
| 37,692 | Feb. 17, 1863 | B. Hotchkiss | Improvement in drop-presses | drop hammers |
| 40,769 | Dec. 01, 1863 | S. Remington | Improvement in Drop-Presses | drop hammers |
| 48,394 | Jun. 27, 1865 | M. Hastings | Improved Gold-Beating Hammer | drop hammers |
| 69,518 | Oct. 01, 1867 | W.H. Waters | Drop Hammer | drop hammers |
| 77,155 | Apr. 21, 1868 | J. Wool | Drop Hammer | drop hammers |
| 125,386 | Apr. 09, 1872 | T. Gaillard | Improvement in Drop Presses | drop hammers |
| 130,183 | Aug. 06, 1872 | J. Blackadder | Improvement in Drop-Hammers | drop hammers |
| 148,867 | Mar. 24, 1874 | L.L. Whitlock | Drop-Hammers | drop hammers |
| 149,277 | Mar. 31, 1874 | L. Chapman | Drop-Hammers | drop hammers |
| 160,483 | Mar. 02, 1875 | N.C. Stiles | Drop Hammer | drop hammers |
| 228,067 | May 25, 1880 | M. Hasse | Drop-Hammer | drop hammers |
| 255,619 | Mar. 28, 1882 | C.A. Hague | Drop Hammer | drop hammers |
| 259,287 | Jun. 13, 1882 | A.R. Byrkett | Drop Hammer | drop hammers |
